Yollo vs Just One Set
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Yollo
This app helps you create custom interval running routines with adjustable voice guidance. It also features social connections, appointment scheduling for runs, and integration with health data.
- Customizable interval running courses
- Adjustable voice guidance frequency
- Music playback without interruption
- Run appointment scheduling
- Follow nearby runners
- Direct messaging with connections
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*The best interval running timer app Yollo that provides you with the best running experience! - An app that allows you to set up the optimal interval running courses and adjust the frequency of voice guidance for your needs. *Clean Voice Coaching Running App - A running app with a no-frills voice coach that allows you to run while listening to music uninterrupted. *Appointments - A way to not procrastinate running! - Make appointments to run at the same time at your respective locations. *Social - Follow nearby runners and stimulate your running instincts. *Dating - If you follow each other, you can chat. Yollo Subscription • Get customized interval runs even after free use of 1 month. • Unlimited access to view runner profiles. • Unlimited access to view distance/rankings on the ranking list. • Create appointments with others without restriction. • Create clubs without restriction. • Invite club members without restriction. Yollo uses HealthKit to export your Yollo activities to the Health app and read heart rate and biometric data. You can subscribe and pay through your iTunes account. Payment will be charged to your iTunes account at confirmation of purchase. Your subscription will automatically renew unless canceled at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours prior to the end of the current period. Subscriptions may be managed by the user and auto-renew may be turned off after purchase by going to the 'Manage Subscription' page in settings. Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable. The subscription will renew at the same cost. Terms of Service: https://support.yolloapp.com/terms Privacy Policy: https://support.yolloapp.com/
Just One Set
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Most workout apps hand you an empty screen and ask you to build a program. Just One Set asks a few questions and hands you a routine you can start today — with the weights already filled in. ■ A routine built around what you actually have Answer a few questions: your goal, where you train, how many days a week, how long per session, and which joints bother you. You get 2–4 full-body routines drawn from 58 exercises, matched to the equipment you own — a full gym, a few dumbbells at home, or nothing at all. Training for muscle, fat loss, general health, or mobility? Each goal builds a different routine. Sore knee or shoulder? Exercises that load that joint are left out. ■ The weight is decided for you Tell us roughly what you lift on bench, squat, and deadlift, and every exercise in your routine gets a starting weight — including the ones you didn't answer for. New to lifting? You start with the bar. From there you never pick a number again: · Hit every set → the weight goes up next time · Miss twice in a row → it drops 10% so you can rebuild We start you lighter than you can handle on purpose. A first week you finish is worth more than a first week you quit. ■ One tap per set Tap done or stopped. That's the whole interaction. The rest timer starts on its own and tells you when to go again — even with your phone locked. Missing a machine? Swap it in one tap and the routine remembers. Want something extra today? Add it. Reorder by dragging. Want to log a workout you already finished? There's a quick-log mode for that. ■ Notes that follow the exercise, not the day After each exercise you can log how heavy it felt, whether you got a good pump, any pain, and the pin or seat setting you used. Next time that exercise comes up — in any routine — you see what you wrote last time. No more guessing which hole the seat was on. ■ Everything stays on your phone No account. No login. No sign-up. Your workouts, body details, and records live in a database on your device and are never uploaded. Works fully offline, on the subway or in a basement gym. The only thing that ever leaves your phone is one optional sentence: during setup you can write a note in your own words — "I work late most nights," "I've had knee surgery" — and it's read once to adjust your plan, then discarded. Skip it and nothing is sent at all. ■ What's inside · 58 exercises — barbell, dumbbell, machine, cable, kettlebell, band, bodyweight, cardio, and mobility · 2–4 routines a week, chosen by you each day · Automatic starting weights and progression · Rest timer with a notification when it ends · Weekly reminders, one hour before you usually train · Month and week calendar of every session · Total volume, session time, personal records, and streaks · Per-exercise notes with pain and setting tracking · English, 한국어, 日本語 ■ No catch No ads. No subscription. No in-app purchases. No analytics SDKs. Nothing to sign up for. Just One Set is not a medical device and does not provide medical advice. If something hurts, stop and see a professional.
Screenshots
Verdict
The clearest difference is in-app purchases: Just One Set at none against Yollo's 2. Yollo's advantage is device support (3 vs 1) and iOS requirement (14.0 vs 16.4). On price and ads 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. Yollo sells 2 in-app purchases, starting at $39.99 per year. Just One Set asks for nothing beyond the download.
| Parameter | Yollo | Just One Set |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (15 ratings) — better | — |
| Positive reviews | 74.2% of reviews | — |
| Number of ratings | 15 — better | — |
| Update frequency | Every 4 weeks | — |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Freemium | — |
| Devices | iPhone, iPod, Apple Watch — better | iPhone |
| Requires iOS | 14.0 — better | 16.4 |
| Further details — not scored | ||
| Size | 203 MB | 103 MB |
| Age rating | 4+ | 4+ |
| Developer | Studio Y Inc. | HYUNSOO JANG |
In-app purchases
Yollo
- Yearly Subscription$39.991 Year
- Coach$1.99
Just One Set
No in-app purchases









