# Isaksen Solar vs SubTrackr

The clearest difference is in-app purchases: Isaksen Solar at none against SubTrackr's 3. Isaksen Solar also leads on iOS requirement (15.6 vs 17.0). SubTrackr's advantage is update cadence (weekly vs every 2 months). On price, ads and device support there is nothing between them.

Both are free to download. SubTrackr sells 3 in-app purchases, starting at $2.99 per month. Isaksen Solar asks for nothing beyond the download.

Isaksen Solar ships an update every 2 months, SubTrackr weekly. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Isaksen Solar | SubTrackr |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/isaksen-solar/id1562747342/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Weekly** |
| Monetization | Ad-supported | — |
| Size | 33 MB | 1 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Isaksen Solar LLC](https://appshunter.io/developer/1562747344) | [Deniz Demirel](https://appshunter.io/developer/1868819306) |

## What reviewers say

### Isaksen Solar

[App page](https://appshunter.io/ios/app/isaksen-solar/id1562747342)

Monitor your solar system's performance in real-time. Track environmental benefits like CO2 offset and trees planted. Easily contact support and refer friends to install their own solar systems.

**Highlights:** Real-time system performance monitoring, Lifetime environmental benefit tracking, CO2 Offset and trees planted metrics, Direct contact with support team, Friend referral program

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

**In-app purchases:** none


### SubTrackr

[App page](https://appshunter.io/ios/app/subtrackrsubscription-tracker/id6760211779)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $2.99 | per month |
| Yearly | $19.99 | per year |
| Lifetime | $49.99 | one-time |


## Frequently asked questions

### Is Isaksen Solar free?

Isaksen Solar is free to download, with no in-app purchases.

### Is SubTrackr free?

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

### Do Isaksen Solar or SubTrackr have ads?

Neither Isaksen Solar nor SubTrackr shows ads.

### Which is updated more often, Isaksen Solar or SubTrackr?

Isaksen Solar ships an update every 2 months, and SubTrackr weekly. Most recently, Isaksen Solar was updated on November 3, 2026 and SubTrackr on October 31, 2026.

---

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