# Exsurgo Performance System vs Sendkeeper

The clearest difference is in-app purchases: Exsurgo Performance System at none against Sendkeeper's 2. Sendkeeper's advantage is update cadence (every 4 weeks vs every 3 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Sendkeeper sells 2 one-off in-app purchases. Exsurgo Performance System asks for nothing beyond the download.

Exsurgo Performance System ships an update every 3 months, Sendkeeper every 4 weeks. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Exsurgo Performance System | Sendkeeper |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/exsurgo-performance-system/id1545024378/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 4 weeks** |
| Monetization | Free | — |
| Size | 30 MB | 49 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Exsurgo Technologies, LLC](https://appshunter.io/developer/1396586023) | [Marc Plunkett](https://appshunter.io/developer/1449138023) |

## What reviewers say

### Exsurgo Performance System

[App page](https://appshunter.io/ios/app/exsurgo-performance-system/id1545024378)

This application connects with Exsurgo Technologies devices to capture athletic performance data. Analyze your results to create effective training programs for improved athletic abilities, injury recovery, or establishing a starting baseline.

**Highlights:** Capture data from gFlight, gSprint, and gStrength devices, Analyze athletic performance metrics, Build custom training programs, Track progress for injury recovery, Establish training baselines

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Sendkeeper

[App page](https://appshunter.io/ios/app/sendkeeper/id6755792136)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1x Competition Token | $19.99 | one-time |
| 5x Comp Token Pack | $99.99 | one-time |


## Frequently asked questions

### Is Exsurgo Performance System free?

Exsurgo Performance System is free to download, with no in-app purchases.

### Is Sendkeeper free?

Sendkeeper is free to download, with in-app purchases available.

### Do Exsurgo Performance System or Sendkeeper have ads?

Neither Exsurgo Performance System nor Sendkeeper shows ads.

### Which is updated more often, Exsurgo Performance System or Sendkeeper?

Exsurgo Performance System ships an update every 3 months, and Sendkeeper every 4 weeks. Most recently, Exsurgo Performance System was updated on October 24, 2026 and Sendkeeper on October 25, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*