Fast.io vs Selah Studio
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
Fast.io
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Fast.io is a beautifully simple intermittent fasting timer designed to help you stay consistent and focused on your fasting goals. Track your fast in real time, monitor hydration, and stay motivated with clear insights, widgets, and Live Activities. Perfect for popular fasting schedules like **16:8, 18:6, or OMAD**. #### TRACK YOUR FAST β’ Start fasting sessions with presets like 16:8, 18:6, or create custom fasting intervals β’ See elapsed time, remaining time, and fasting phases\ β’ Follow your fasting progress in real time #### TRACK YOUR WEIGHT β’ Sync weight with Apple Health β’ Monitor weight changes during fasting β’ Understand how fasting affects your body #### STAY CONSISTENT β’ Local reminders for fasting milestones β’ Daily hydration tracking β’ Motivation through achievements and streaks #### SEE YOUR PROGRESS β’ History with notes and mood tracking β’ Weekly, monthly, and yearly statistics β’ Understand and improve your fasting habits #### BUILT FOR APPLE DEVICES β’ Live Activities and Dynamic Island β’ Home Screen and Lock Screen widgets β’ Apple Watch companion app #### PRO FEATURES β’ Oneβtime purchase (no subscription) β’ Advanced customization β’ Extended fasting history Fast.io is designed to make intermittent fasting simple, beautiful, and effective.
Selah Studio
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Welcome to Selah Studio β a modern Pilates and fitness studio designed to help you move with purpose. Rooted in intentional movement and meaningful community, Selah Studio offers reformer Pilates, mat Pilates, strength-based fitness, barre-inspired classes, fusion-style movement, faith-fitness classes, and specialty events designed to build strength, confidence, and consistency. Whether youβre brand new to Pilates + fitness or looking to deepen your practice, our classes are designed to challenge, energize, and support you at every stage of your movement journey. With the Selah Studio app, you can: β’ View the class schedule β’ Reserve and manage bookings β’ Join waitlists β’ Purchase memberships and class packs β’ Stay connected with studio updates and events β’ Receive reminders and notifications β’ Easily stay consistent with your routine and goals At Selah, movement is more than a workout β itβs a space to pause, strengthen, and reconnect to what matters most. Move with purpose. Step into Selah.
Screenshots
Verdict
The clearest difference is in-app purchases: Selah Studio at none against Fast.io's 1. Selah Studio also leads on iOS requirement (15.1 vs 26.0). On price, update cadence, ads 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. Fast.io sells 1 one-off in-app purchase. Selah Studio asks for nothing beyond the download.
Fast.io ships an update monthly, Selah Studio every 3 weeks. The most recent releases landed on September 21, 2026 and July 17, 2026 respectively.
| Parameter | Fast.io | Selah Studio |
|---|---|---|
| Price | Free | Free |
| Update frequency | Monthly | Every 3 weeks β better |
| Ads | No | No |
| In-app purchases | Yes | No β better |
| Devices | iPhone, Apple Watch | iPhone, iPod |
| Requires iOS | 26.0 | 15.1 β better |
| Further details β not scored | ||
| Size | 23 MB | 86 MB |
| Age rating | 4+ | 4+ |
| Developer | Stefan Sturm | Spotbee, Inc. |
In-app purchases
Fast.io
- Fast.io Pro$6.99
Selah Studio
No in-app purchases





