A one-day watch voice recorder: WristMemo hit #2 on the China-store productivity Top Paid chart, riding its name and timing, not the product

WristMemo turns an Apple Watch into an all-day voice recorder. Audio syncs to the iPhone and is transcribed on-device, and each evening you get a recap of the day, for a one-time ¥28. It launched in Oct 17 and two days later was #2 in the China-store productivity Top Paid chart and #25 overall, with zero ad spend. But it isn't the first to do this. At least ten similar apps appeared in the same month, and the developer has written out the whole playbook publicly. If you want to follow, there's little room left in watch recording. What's worth learning is the playbook.

Morning #3, noon #2, afternoon overall #25

In 2026 Oct 19, indie developer kelvinmade (X @kelvinmade13) posted a long write-up that opened with a string of ranks:

#70, #30, down to #44, back up to #18, #10, waking up at #3, and #2 by noon. By afternoon it entered the overall Top Paid chart across all categories at #25, sitting alongside games and major apps.

He says he built the app in a single day with Claude Code. The video that brought in the most downloads was a 25-second Douyin clip he shot in a hurry because he "had no time left". It opens with "AI hardware recorders are hot lately", then he raises his wrist and taps the watch. By the screenshots he posted, the video passed 10k views in a day, with 200+ likes and 120 saves. The Xiaohongshu image posts he had worked hard on did only modestly.

The long post was later reposted in full on jxxy.net under the title "A one-day app with zero ad spend broke into the overall Top Paid chart at #25".

What it is

Usage is three steps: tap once on the watch to start recording, tap again to mark a key moment, long-press to stop. Audio syncs to the iPhone and is transcribed on-device. Every evening you get a recap covering what was discussed, what was decided, and what's still to do. No account signup, no server. ¥28 in the China store (launch price was ¥18), $3.99 in the US store, both one-time purchases.

The developer name shown in the store is "悦茨 宿", and the account has only this one App. In Oct 31, version 2.0 added a lot: it can tell speakers apart (this needs cloud transcription, with your own Alibaba Cloud or Tencent Cloud Key), it works with just an iPhone and no watch, older Series 4 watches can install it too, and there's also a Mac helper that lets Claude Code and Codex look up what you said during the day.

Why now

Demand was lit by three things at once:

• Apple built it first, but it's not usable in China. On Sep 10 Apple announced Siri Recap for Apple Watch Series 12 and Ultra 4. The watch listens all day and produces an evening summary. But the feature only arrives as a beta later this year, launches English-only, and isn't available on China-market devices.
• AI recording cards were selling well. Clip-on-chest or phone-back recording cards at ¥199 to ¥888 each have sold steadily for two years. WristMemo's pitch was one line: "You already own the best AI recording hardware", meaning the watch on your wrist.
• Auday went viral on Xiaohongshu first. Indie developer BaiFu's Auday launched in the China store in Oct 12 (per a Smzdm 10-22 article). The dev diary got 1,200+ likes and the comments ran 900 levels deep. Within a week, Shanjian, Nomily, Shilu and WristMemo had all appeared.

So WristMemo was a follower, a beat behind Auday, and it caught the second wave of traffic.

Where users come from

• The name is the search term. The app is called "Wrist Notes - Watch Recorder, AI Transcription." The developer says searching "Wrist Notes" or "watch recorder" ranks it #1, "all-day recording" #4, and "watch recording" #6. He can't even crack the top 200 for broad terms like "recording to text," so he doesn't bother competing for them.
• Every channel on the same day. The paid chart tracks recent download velocity, not cumulative totals. The same 50 sales can push the app very high if they land in two days but barely move it spread over two weeks. He concentrated Xiaohongshu, Douyin, WeChat Channels and Moments on one day to create a spike. He also says the China-store paid category charts are "thin", so a small utility with a few dozen paid downloads a day can reach the top 10.
• Activation codes are rationed. Downloads via activation codes probably don't count toward the paid chart, so every free code given out during a push is one fewer paid download to boost ranking. He only gives out a limited number each day in the fan group. Recipients who use the app for 3 days and agree to write an honest review get one code to pass to a friend.
• The developer's own write-up. The headline "One day to build, zero ad spend, overall Top Paid #25" was itself made to be shared.
• Organic overseas traffic. He ran no promotion in English-speaking markets and relied only on the English store page. His best self-reported ranks were #21 in the Canada category chart and #66 in the US.

He also wrote about a pitfall: replying to every comment on Xiaohongshu with "DM me your email" to request codes got his account restricted for interaction, for "guiding off-platform transactions".

How big it is now

Small, and the peak has already passed.

• China store: productivity Top Paid chart, held at #2,11-05 from 10-28 to 11-04 and then dropped to #3. #1 has been Auday (¥68) the whole time. Overall Top Paid slid from #45 in 10-28 to #113,11-06 in 11-02 and then #101.
• Ratings: 26 total across all countries (11-06), adding about 1 per day. China store 23 ratings, average 3.87. US store 3 ratings, average 2 stars.
• Overseas: 11-06 is #7 in the Singapore productivity Top Paid chart, #10 in Vietnam and South Africa, #50 in the US, and #57 in Canada (10-28 at #17).
• Revenue: Apple doesn't publish download numbers. Based on the developer's claim of "a few dozen paid downloads a day to get into the top 10 of the category", it's probably selling a few dozen copies a day now, putting revenue in the range of several hundred to over a thousand yuan a day (estimate).

The overall chart has been sliding steadily and ratings have only been ticking up one by one. That suggests that once the push days passed, what's holding it up is mainly a handful of search placements.

What users say

The good reviews all say some version of "Finally no need to carry a second device":

This app replaced the recorder I'd used for a year… auto-record, auto-transcribe and summarize, auto-export. If it had come out a year earlier I wouldn't have wasted money on a recorder (China store 5 stars, 11-01)

Phone recording is inconvenient in meetings and other places where recording is needed, and the watch is very handy… the watch recording syncs to the phone quickly, and the phone-side audio is clear and the transcription accurate (China store 5 stars, 10-21)

The bad reviews point to the usual problems with this kind of product:

Any incoming call interrupts it. With lots of calls a day, it often misses recordings, so the core function fails. Where can I get a refund? (China store 1 stars, 10-24)

Won't install and won't refund (China store 1 stars, 10-30)

Calls interrupting recording, the watch-side install hanging on the spinner, and battery life that doesn't last. Users have raised these same issues in reviews of Auday and other similar apps.

Who it's competing with

WristMemo is not far from Auday or Wrist Echo in product terms. It reached #2 on the chart because of timing, the name, a low price, and a concentrated push to climb the charts. The Mac assistant angle gives people in the scene a reason to share it, but we can't yet see how many downloads it brought in.

If it were you

Grade C: Worth learning from, but don't compete on watch recordings. A dozen-plus rivals have crowded in within a month. The #1 spot still belongs to Auday, the pioneer, which was also the first to expand overseas. The playbook is now fully public and the category is small. If Apple ever brings Siri Recap to Chinese-language users and to China-market devices, the system feature will swallow much of this category.

Who it's for: a solo indie dev who uses tools like Claude Code to ship an app in a few days, and can record a rough talking-head video. What to study is the method, not this product.

Who it's not for: anyone planning another Apple Watch recording app. You'd rank behind Auday, WristMemo, and Wrist Echo, and those names already own the search slots. Overseas is no better: Auday has charted in 30+ countries.

How to do it: watch for features Big Tech has just announced that are "English only / not in China / new devices only", and build them on hardware users already own before the big companies roll them out. Ship a first version that does one thing, sold as a one-time purchase, with anything computable on-device kept off servers, so ¥18–28 can still be profitable. If you must work in recordings, only one direction still looks open: truly fix the complaints shared across the category (call interruptions, battery life, watch-side installation), then market the fix.

How to get users: put the long-tail keywords users actually search for in the app name, and skip the big head terms. After launch, post on Xiaohongshu, Douyin, WeChat Channels, and Moments on the same day. Videos can be rough, but must make sense within three seconds. During the chart push, don't hand out activation codes too often, and keep emails and WeChat IDs out of the comments. Ask for an App Store rating only when the user first feels the value (for example, when they first see the daily recap).

When to get in: launch within two to four weeks of a Big Tech feature drop. WristMemo went live 37 days after Siri Recap was announced and 5 days after Auday went on sale. Another week later and it would have ended up like Wrist Echo: dozens of places down the chart with zero ratings.

Signs this read is wrong: ① WristMemo or Auday discloses monthly revenue in the tens of thousands of dollars or more, which would mean the category is bigger than it looks and followers can still win a share; ② two months from now most rivals have stopped updating while WristMemo still holds around #3 in its category, which would mean search slots can really sustain a small business and the first-mover playbook is worth more than assumed here; ③ conversely, if Siri Recap announces Chinese support this year, the window for this category closes.

Sources

• Developer's long post on X (2026-10-19): x.com/kelvinmade13/status/2112132185318994230; reposted on jxxy.net (10-24)
• smzdm.com article "Chinese-market watches still waiting for Siri Recap" (10-22): post.m.smzdm.com/p/anv9noep/
• Official site: kelvinmade.com/wristmemo/
• App Store China and US store pages plus the 2.0 version release notes (11-06); productivity Top Paid charts across App Store regions, overall Top Paid, and ratings (10-28 to 11-06); China store reviews (10-21 to 11-03)
• Douyin video data, search rankings, and peak positions are all as reported by the developer; not independently verified.