SOLE+ vs Lettest
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SOLE+
Track your fitness progress by syncing workout data from your Sole equipment. View detailed summaries, monitor trends, and stay motivated with achievements. Integrates with Apple Health for comprehensive health tracking.
- Workout history sync
- In-depth workout summaries
- Fitness trend analysis
- Progress tracking
- Achievement unlocking
- Apple Health integration
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The new SOLE+ app allows users to access workout records from your Treadmill, Bike or Elliptical once your Sole+ account is linked to a Sole equipment. The key features of Sole+ include: 1. Workout history on the go – sync and view workout history once your Sole+ account is linked to any Sole equipment 2. Access in-depth summary of your workout history and overall fitness trends in app 3. Keep track your workout progress to keep yourself motivated 4. Unlock achievements by reaching your fitness milestones 5. Integrates with Apple Health to sync workouts and record data Privacy Policy: https://dyaco-resources.s3.us-east-1.amazonaws.com/Policy/SOLE2_APP_PrivacyPolicy_EN.html Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Lettest
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Lettest is a weight tracker that wants you to win. Open the app and you see one thing: an ambient, living orb that pulses in colour and rhythm to reflect how you're tracking against your goal. It's calming when you're on course, gently warm when you've drifted, and quietly fades when you've been away too long. No stickers, no streak guilt, no cluttered dashboards — just a feeling of how things are going, and a beautiful chart of how things have gone. Logging is one tap. Most days you won't even need to log: if you have a smart scale connected to Apple Health, your weights flow into Lettest automatically. When you do log manually, the entry sheet pre-fills to your last weight and saves with a satisfying haptic. Your data follows you between iPhone and iPad through iCloud — silently, with no setup. Whatever you log on one device shows up on the other. LETTEST IS DESIGNED TO BE QUIET • No notifications by default. The optional reminder only fires if you haven't logged by a time you choose. • No social features, no leaderboards, no coaching content trying to upsell you. • No analytics, no third-party SDKs. The only network calls Lettest makes are to iCloud and Apple Health, both Apple-native. A LIVING ORB FOR YOUR PROGRESS The orb breathes. Its colour, brightness, and pulse speed reflect how you're tracking against your goal: • Cool blue and steady when you're on course. • Bright cyan and faster when you're ahead. • Warm amber when you've drifted off course. • Dimmed when you've been away. GOALS THAT FIT YOUR LIFE Set a target weight, a target date, a weekly rate — any combination, all optional. If you've added your height, Lettest suggests a healthy target based on a BMI of 22 (mid-range of the WHO healthy band). You can accept it or set your own. PROFILE-AWARE With your height set, Lettest shows your healthy weight range (BMI 18.5–24.9) and uses it to suggest goals. The profile prefills from Apple Health if you've granted access, so you don't type anything you didn't have to. CHARTS THAT TELL THE STORY A clean Swift Charts trend with 7-day rolling average, a dashed goal line, and 1W / 1M / 3M / 1Y / All ranges. Drag along the chart to scrub a date readout. The Y-axis tightens around your data so subtle changes are visible. UNIVERSAL APP iPhone in portrait, iPad in a two-pane layout — orb on the left, chart and recent history on the right. Light and dark themes. Full VoiceOver and Dynamic Type support. PRIVACY-FIRST Lettest stores your data in your private iCloud database. No third party sees it. No analytics. The HealthKit integration only reads the body-mass and body-fat samples you authorize, and writes back the entries you log — nothing else. Your weight history is yours. REQUIREMENTS • iPhone or iPad running iOS / iPadOS 17 or later. • iCloud account (sign in to System Settings → iCloud) for sync. Without iCloud, Lettest stores everything locally and still works. • Apple Health (optional) for automatic weight import from smart scales. Lettest is a calmly-built tool for one quiet daily habit. Weigh in. Watch the orb. Repeat.
Screenshots
Verdict
The clearest difference is in-app purchases: Lettest at none against SOLE+'s 2. On price, update cadence, 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
Both are free to download. SOLE+ sells 2 in-app purchases, starting at $9.99 per month. Lettest asks for nothing beyond the download.
Both ship on a similar rhythm, roughly weekly. The most recent releases landed on October 22, 2026 and October 10, 2026 respectively.
| Parameter | SOLE+ | Lettest |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (3K ratings) — better | — |
| Positive reviews | 16.2% of reviews | — |
| Number of ratings | 3K — better | — |
| Update frequency | Weekly | Weekly |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, Apple Watch |
| Requires iOS | 16.2 — better | 17.0 |
| Further details — not scored | ||
| Size | 79 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Dyaco International Inc. | Will Arentz |
Bugs and requests
SOLE+
Reported bugs
3 issues- Duplicate workout entries
- Incorrect data reporting (calories, distance, etc.)
- Frequent app crashes
Requested features
5 requests- Ability to cast/mirror workouts to TV
- Bluetooth music playback during workouts
- Improved Apple Watch integration
- Vertical feet tracking
- iPad-optimized layout
Lettest
Not enough reviews yet to summarise bugs or requests.
In-app purchases
SOLE+
- Monthly1 Month trial$9.991 Month
- Yearly1 Month trial$99.001 Year
Lettest
No in-app purchases









