SolTi vs Plank Timer
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
SolTi
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SolTi is a workout timer for people who train alone at the gym or at home - with a prep countdown, HIIT intervals, and a voice that counts you in. Save each workout as a card, tap it once, and the timer runs the whole thing: prep time, work time, rest, and the next round. Every finished session is logged automatically, so your records build up without any extra taps. A voice that keeps you off the screen - A spoken 3-2-1 countdown before work starts, and "Go" the moment it begins. - A voice cue each time a rest phase starts, and a cheer when the workout is done. - Vibration on every phase change, for loud gyms and quiet mornings. - Sound and vibration can be turned on or off separately in Settings. Prep time, then work - one unbroken flow - Every timer card has a prep time: press Start, get into position, and the work time begins on cue. - The timer keeps running with the screen off; a notification marks each phase change and the finish. - Pause, resume, or stop early with big buttons made for one hand. Timer cards for the workouts you repeat - Save "Plank 2:00", "Rest 90s", or "Squats 0:45" as cards and start any of them with one tap. - Give every card its own color with the color slider. - Put cards in the order you like. HIIT and Tabata intervals - A HIIT timer strings several exercises together with rest in between and repeats them for as many rounds as you set. - 20 seconds on, 10 seconds off, 8 rounds - the classic 4-minute Tabata is one card. - Each exercise in a HIIT timer gets its own time, so full-body circuits are easy to build. Records, levels, and badges - The Home screen shows today's training as a color bar. - Records shows weekly and monthly charts, a history list by date, and totals: time, sessions, average, and streak days. - Five levels from Rookie to Master, earned with total training time, plus 9 badges to collect. - A 12-week workout heatmap shows how hard you trained week by week (Pro). Free and Pro - Free: up to 3 regular timer cards, 1 HIIT timer, and all records, stats, levels, and badges. The free version shows ads outside of workouts. - Pro: unlimited timer cards and HIIT timers, no ads, the 12-week heatmap, and home screen widgets (small, medium, large) that start a card right from your home screen. - Pro is a monthly or yearly subscription. The price shows in your local currency on the purchase screen. Do I need an account? No - there is no sign-up, and your records are stored on this phone. Does the timer work with the screen off? Yes - it keeps counting, and a notification tells you when a phase changes and when you are done. Can I switch the app language? Yes - choose English or Korean in Settings. The free version shows ads. Questions? Use Contact us in Settings. Privacy policy: https://www.junu.co.kr/terms/solti/privacy/ Terms of use (EULA): https://www.junu.co.kr/terms/solti/eula/
Plank Timer
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A plank timer that calls out every second for you. Set the hold, put the phone down, and let the voice, the 3-2-1 beeps and the haptic buzz tell you exactly when to brace, when you're halfway, and when you're done. Most people quit the plank early because they keep peeking at a stopwatch. This app takes the screen out of the equation: a full-screen countdown ring, spoken "Hold" and "Rest" cues, a halfway alert to keep your core tight, and a get-set countdown before every set. Then it logs the hold, grows your streak, and pushes the next target a little higher. WHAT YOU GET - Hold longer without watching the clock: voice cues, countdown beeps and haptics carry you through every second - Never wonder what comes next: multi-set core routines that chain forearm, high, side and reverse planks with timed rest between holds - A month-long plan that actually ramps: the 30-Day Plank Challenge takes you from a 20-second hold to a 5-minute hold, rest days included - Proof you are getting stronger: streak, longest hold, total core minutes, weekly total and a 7 / 14 / 30-day chart of core seconds per day - A level that climbs with you, from Core Rookie to Plank Master, so 40 honest seconds today still counts - Form you can trust: plain-English guides on plank technique, the four variations, the mistakes that kill results, and how to train safely PERFECT FOR - Beginners who can barely hold 20 seconds and want a plan, not a stopwatch - Anyone chasing a personal best on the forearm plank - Desk workers building core strength for posture and a happier lower back - Home and travel training with zero equipment and zero setup WHY NOT JUST USE THE STOPWATCH APP? A stopwatch makes you stare at your phone in the exact position where lifting your head wrecks your form. This one speaks. It counts you in, warns you at the halfway mark, beeps the last three seconds, buzzes when a set flips to rest, keeps the screen awake, and then writes the hold into your history so tomorrow's target is based on something real. A stopwatch forgets you the second you stop it. PRIVACY Every hold, streak and setting stays on your iPhone. No account, no sign-up, no ads, no tracking, no cloud upload. The whole app works offline, on a plane or in a basement gym. FULL ACCESS The full app opens with a membership: all four plank variations, all four multi-set routines, the 30-Day Plank Challenge and the 14-Day Core Reset, the custom-duration timer, your full history, and the charts and trends in Progress. Choose weekly, yearly, or a one-time lifetime unlock that never renews. Weekly and yearly renew automatically unless cancelled at least 24 hours before the period ends; manage or cancel anytime in your App Store account settings. Restore Purchases is in Settings. Start with a 30-second forearm plank today and let the timer talk you through the rest. Terms of Use (EULA): https://web-levi.web.app/terms Privacy Policy: https://web-levi.web.app/privacy-policy Questions? Email tphuc.work@gmail.com
Screenshots
Verdict
The clearest difference is ads: Plank Timer at none against SolTi's shown. On price, update cadence, in-app purchases and device support there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. SolTi sells 2 in-app purchases, starting at $0.99 per month and Plank Timer sells 3 in-app purchases, starting at $2.99 per 7 days. Whichever you choose, the download price is not the number that matters.
SolTi ships an update monthly, Plank Timer every 6 weeks. The most recent releases landed on October 30, 2026 and November 10, 2026 respectively.
| Parameter | SolTi | Plank Timer |
|---|---|---|
| Price | Free | Free |
| Update frequency | Monthly β better | Every 6 weeks |
| Ads | Yes | No β better |
| In-app purchases | Yes | Yes |
| Devices | iPhone | iPhone |
| Requires iOS | 17.6 | 17.0 β better |
| Further details β not scored | ||
| Size | 11 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | Jinyoung Lee | Phuc Pham |
In-app purchases
SolTi
- SolTi Pro Monthly$0.991 Month
- SolTi Pro Yearly$9.991 Year
Plank Timer
- Posture Trainer - Weekly$2.997 Days
- Bodyweight Strength - Yearly$14.991 Year
- Isometric Training - Lifetime$29.99









