Simple Gym Trainer vs RUN interval
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Simple Gym Trainer
Read full descriptionHide full description
A simple gym trainer application for managing training programs and exercises information. Exercise lists can be sorted by last exercised date, muscle or exercise name. Very simple & easy to use.
RUN interval
This app simplifies interval and Fartlek running by allowing you to set custom targets for time or distance during hard, easy, and rest efforts. It offers detailed post-run summaries, audio and visual feedback, and an Apple Watch app for enhanced training.
- Customizable interval sessions
- Time and distance targets
- Distance Goal option
- Audio and visual feedback
- Detailed run summaries
- Apple Watch app
- Strava sharing
Read full descriptionHide full description
Easily set up and record your Interval and Fartlek running sessions. With the flexibility of using time and/or distance as interval targets for your "Hard", "Easy" and "Rest" efforts. The simple but highly configurable interface on your phone and watch will have you running sooner. Now with a Distance Goal option for your session. Along with great audio and visual feedback, detailed post-run summary, share your runs to Strava, and a full-featured Apple Watch app. You can also record your regular runs with voice-over calling out distance and pace feedback. Key Features: • Easily create flexible custom interval sessions. • Utilize three effort targets "Hard", "Easy" and "Rest" in each set, targeting time or distance (meters or miles). • You can "Skip" any of the three efforts to create flexible sets, like building a progressive intervals session. • NEW: Set a Distance Goal for your session, that repeats the sets from the start until the distance has been reached. • Set a Warm-Up and Warm-Down timer or distance around your session. • Clear and easily glanceable visuals and audio prompts, including vibrations. • Voice-over prompts to save you from looking at the screen, great for iPhone or headphone users. • Voice-over prompts include the upcoming intervals effort and time/distance amount, and your last intervals average pace and heart rate. • Full-featured Apple Watch App! • Heart Rate Zones! (see description below) • Indoor Mode, no GPS, for treadmill running. • Sound Mode, for normal, discrete or silent audio prompts on your watch. • Vibration feedback on both the phone and watch. • Detailed run summary, showing pace for hard and easy efforts. • The run summary also includes interval breakdown, distance breakdown and heart rate details. • Play music or podcasts while running and still hear the audio prompts. • Sharing. Share a summary photo with your friends. • Private data. We don’t send any of your data to a server or share it with anyone. Session Types: • Normal Run – Record a normal run, long or short. • Record Intervals – If you run with a group or do an undefined session, then use the Record Interval option. It allows you to manually change between "Hard" and "Easy" reps, allowing you to record your session. • Custom Intervals – Our fully flexible intervals that allow you to use time and/or distance for the efforts. Add multiple intervals sets together to create the session you want. Sharing: From the summary screen, you can share your runs with friends or across social media. If you want to share directly with friends or across other social media, you can share a summary image with the details of your run. Heart Rate Zones: (Apple Watch Only) Zones are displayed as grouped percentages of your maximum heart rate. Giving you an indication of your current work rate based on your current heart rate. Just enter your maximum workout heart rate into our Settings screen and they will display on your Watch the next time you run. Zone 1: Very Light Effort 50-60% (Gray) Zone 2: Light Effort 60-70% (Blue) Zone 3: Moderate Effort 70-80% (Green) Zone 4: Hard Effort 80-90% (Yellow) Zone 5: Maximum Effort 90-100% (Red) Privacy: We don’t want to know where you have run, that's for you to worry about. We don’t send any of your data to a server or share it with anyone you don't want too. We keep your running records safe in Apple Health so you have control. Apple Heath gives you the control over who accesses your data. We only write and read the data we record from your running. Feedback: And because we don't send any data to a server, we need you to send us feedback and suggestions. Hit the Support link below or visit our website to contact us.
Screenshots
Verdict
The clearest difference is price: RUN interval at Free against Simple Gym Trainer's $0.99. RUN interval also leads on iOS requirement (15.6 vs 17.0). Simple Gym Trainer's advantage is in-app purchases (none vs 2) and update cadence (every 3 weeks vs every 3 months). On ads and device support 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
RUN interval is free to download; Simple Gym Trainer costs $0.99 up front. RUN interval sells 2 one-off in-app purchases. Simple Gym Trainer asks for nothing beyond the download.
Simple Gym Trainer ships an update every 3 weeks, RUN interval every 3 months. The most recent releases landed on September 22, 2026 and September 25, 2026 respectively.
| Parameter | Simple Gym Trainer | RUN interval |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | — | 4.7 (1K ratings) — better |
| Positive reviews | — | 77.5% of reviews |
| Number of ratings | — | 1K — better |
| Update frequency | Every 3 weeks — better | Every 3 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPad | iPhone, iPod, Apple Watch — better |
| Requires iOS | 17.0 | 15.6 — better |
| Further details — not scored | ||
| Size | 0 MB | 34 MB |
| Age rating | 4+ | 4+ |
| Developer | Simpler Software | CAN YOU HEAR ME SOFTWARE |
In-app purchases
Simple Gym Trainer
No in-app purchases
RUN interval
- The full RUN interval$1.99
- The full RUN interval$3.99
Questions
Is Simple Gym Trainer free?
Is RUN interval free?
Do Simple Gym Trainer or RUN interval have ads?
Which is updated more often, Simple Gym Trainer or RUN interval?
Other comparisons















