AIMO8 vs Mulbyul
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
AIMO8
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This product is equipped with a portable heart rate monitor. Users can choose to upload the daily measurement data to the cloud and store it as a historical record for future query. *Disclaimer This app and portable heart rate monitor have no medical purpose and are intended solely for historical record-keeping. They should not be considered as a substitute for professional medical diagnosis. Their design is not intended for the diagnosis of diseases or other symptoms, nor is it suitable for any treatment, relief, medical intervention, or prevention of any symptoms or diseases. Before making any health-related decisions, please consult a qualified healthcare professional.
Mulbyul
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Mulbyul is a dry-training routine app for freedivers. Build repeatable hold-and-rest workouts you can do on dry land — like CO2 tables — run them with a step-by-step timer, and log every result. Organize the routines your coach gives you or the ones you do most, and watch your progress day by day. ■ Your own training routines · Combine hold and rest steps to build exactly the routine you want. · Save coach-prescribed or go-to routines and start them in one tap. · Or jump straight in with the built-in preset routines. ■ Step timer and contraction logging · Follow your routine through its rest and hold phases. · Tap once to mark your first diaphragm contraction during a hold. · Record both your target and actual time for every set. ■ Routine generation and sync · On supported devices, draft a CO2-style dry-training routine from a single line of text. · Routines are stored on device and can sync via CloudKit depending on your Apple account and iCloud setup. ■ Safety first · A safety notice appears before every session. · Stop immediately if you feel dizzy. · Never train in water alone. ■ Track and reflect · Log target time, actual time, and contraction timing for each set. · Review past sessions and plan your next one. ■ Made for · Freedivers doing dry training at home on weeknights · Students following a coach's routine consistently · Anyone who wants to track their breath-hold progress properly Build your training, one session at a time, with Mulbyul. Note: Mulbyul is a tool for dry training in a safe environment. Never practice breath-hold training in water without a qualified buddy.
Screenshots
Verdict
The clearest difference is ads: AIMO8 at none against Mulbyul's shown. AIMO8 also leads on iOS requirement (13.0 vs 26.0). Mulbyul's advantage is device support (5 vs 3). On price, update cadence and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Both ship on a similar rhythm, roughly monthly. The most recent releases landed on November 7, 2026 and November 5, 2026 respectively.
| Parameter | AIMO8 | Mulbyul |
|---|---|---|
| Price | Free | Free |
| Update frequency | Monthly | Monthly |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac, Apple Watch, Vision Pro — better |
| Requires iOS | 13.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 1 MB | 175 MB |
| Age rating | 4+ | 12+ |
| Developer | 華星醫學科技有限公司 ALPHAHEART LIMITED | InnoSquad |
In-app purchases
AIMO8
No in-app purchases
Mulbyul
No in-app purchases









