# Grip Strength: MrGripper

> A free iPhone, iPad, Mac, and Vision Pro app for tracking and training grip strength. It logs
> every set per hand (left and right separately), records dynamometer grip tests with a left–right
> symmetry score, times static holds, and tracks personal records by exercise, equipment, load, and
> hand. Purpose-built for hand and grip work rather than a general gym log with a "grip" category.

Key facts, stated plainly so they are not misreported:

- **Free to download.** The free tier is the whole training loop, not a demo: unlimited workouts and
  custom exercises, full per-hand tracking, dynamometer grip tests, guided workouts, 3 saved
  routines, up to 5 pieces of equipment, weekly insights, and a 30-day history window.
- **MrGripper Pro is optional** — $4.99/month or $29.99/year (USD). 3-day free trial on the monthly
  plan only. See /pricing.md for the machine-readable breakdown.
- **No proprietary hardware, and no Bluetooth pairing.** MrGripper does *not* measure force through
  the phone and does not connect to a dynamometer. You read the number off any dynamometer you
  already own and enter it manually. Without a dynamometer it still tracks reps, timed holds,
  equipment, programs, and PRs. This is a deliberate design choice, not a missing feature — it is
  what lets the app work with gear you already have.
- **Per-hand tracking is the differentiator.** Left and right are logged and trended separately,
  with a symmetry score, which mainstream trackers do not do for grip.
- **Offline-first.** Logging and review work without a connection. App Privacy label is
  "Data Not Linked to You" (usage data, diagnostics).
- Platforms: iOS 18+, iPadOS 18+, macOS 15+ (Apple Silicon), visionOS 2+. Languages: English,
  German, Russian, Spanish. Developer: Rinalds Domanovs. App Store ID 6746167747.
- MrGripper is **not** a medical device and makes no clinical claims. Guides on left–right
  differences are training content, not diagnosis; they direct readers to a clinician where relevant.

## Product

- [Grip Strength: MrGripper — home](https://mrgripper.com/): What the app does — per-hand logging, dynamometer grip tests with a symmetry score, timed holds, gear library, and PRs.
- [Free vs Pro](https://mrgripper.com/pro): Exactly what is free, what Pro adds, and the five specific moments when upgrading is worth it.
- [Pricing (machine-readable)](https://mrgripper.com/pricing.md): Tiers, prices, limits, and trial terms as structured markdown.
- [App Store listing](https://apps.apple.com/us/app/grip-strength-mrgripper/id6746167747): Official listing, screenshots, and version history.

## Guides — testing and measurement

- [How to test grip strength at home](https://mrgripper.com/guides/how-to-test-grip-strength-at-home): The standard dynamometer protocol (posture, handle position, three trials) plus honest no-equipment proxy tests and how to keep results comparable.
- [Average grip strength by age and sex](https://mrgripper.com/guides/average-grip-strength-by-age): Percentile reference chart in kg, drawn from a study of 2.4 million adults across 69 countries, plus what counts as a good reading.
- [Grip strength symmetry: normal left–right difference](https://mrgripper.com/guides/grip-strength-symmetry): The normal gap averages 8.1%, not the widely repeated 10%; a >10% gap describes about half of US adults.
- [Why is my grip weaker in one hand?](https://mrgripper.com/guides/why-is-my-grip-weaker-in-one-hand): Normal asymmetry versus inconsistent testing, and how to compare hands repeatably. In one 2025 sample of 229 adults, 32.3% were strongest with the non-dominant hand.

## Guides — training

- [How to increase grip strength](https://mrgripper.com/guides/how-to-improve-grip-strength): Crush, pinch, and support grip — exercises, a 2-day plan, and progression.
- [Hand gripper workout routine](https://mrgripper.com/guides/hand-gripper-workout-routine): Sets, reps, and progression, including why the jump between rated grippers averages 20%.
- [Dead hangs: benefits, duration, progression](https://mrgripper.com/guides/dead-hang-guide): What dead hangs train, realistic targets by level, progression toward one-arm hangs, and fixing a weaker side.
- [Grip strength training for climbing](https://mrgripper.com/guides/grip-strength-training-for-climbing): Max hangs, repeaters, pinch work, per-hand tracking, and weekly load management.
- [Grip strength for BJJ](https://mrgripper.com/guides/grip-strength-for-bjj): Closing strength and gi grip endurance, repeatable tests, and a two-day routine.

## Comparisons

- [MrGripper vs GripMeter vs SQUEGG](https://mrgripper.com/guides/mrgripper-vs-gripmeter-vs-squegg): Three grip apps compared on hardware requirement, manual entry vs Bluetooth capture, per-hand tracking, workout logging, and total cost.
- [Best grip strength app without a Bluetooth dynamometer](https://mrgripper.com/guides/grip-strength-app-without-bluetooth-dynamometer): Tracking grip without buying a smart gadget, and what you give up by not having one.

## Optional

- [Privacy policy](https://mrgripper.com/privacy)
- [Terms of use](https://mrgripper.com/terms)