# Kora Sustainability vs Strand & Lock

The clearest difference is in-app purchases: Strand & Lock at none against Kora Sustainability's 5. Strand & Lock also leads on iOS requirement (11.0 vs 15.1). Kora Sustainability's advantage is update cadence (fortnightly vs every 33 months). On price, ads and device support there is nothing between them.

Both are free to download. Kora Sustainability sells 5 in-app purchases, starting at $1.99 per month. Strand & Lock asks for nothing beyond the download.

Kora Sustainability ships an update fortnightly, Strand & Lock every 33 months. The most recent releases landed on November 3, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | Kora Sustainability | Strand & Lock |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (3 ratings)](https://appshunter.io/ios/app/kora-sustainability/id1483753003/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 33 months |
| Monetization | Free with in-app purchases | — |
| Size | 108 MB | 31 MB |
| Requires iOS | 15.1 | **11.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Kora Sustainability Solution SIA](https://appshunter.io/developer/1475239838) | [Strand and Lock Ltd](https://appshunter.io/developer/1498625933) |

## What reviewers say

### Kora Sustainability

[App page](https://appshunter.io/ios/app/kora-sustainability/id1483753003)

Track your environmental impact by measuring sustainable lifestyle choices like mobility, energy use, and purchasing habits. Earn rewards for eco-friendly actions and reduce your carbon footprint through a combination of moral and financial incentives.

**Highlights:** Track sustainable lifestyle choices, Measure impact on the planet, Earn rewards for eco-friendly actions, Reduce CO2 emissions, Compare progress with goals and others, Integrates with Apple Health for steps and distance

**Features:** macOS Compatibility

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Adventurer monthly | $1.99 | per month |
| Sprout Offset Subscription | $3.99 | per month |
| Tree Offset Subscription | $7.99 | per month |
| Forest Offset Subscription | $15.99 | per month |
| Adventurer yearly | $39.99 | per year |


### Strand & Lock

[App page](https://appshunter.io/ios/app/strand-and-lock/id1498625934)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Kora Sustainability free?

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

### Is Strand & Lock free?

Strand & Lock is free to download, with no in-app purchases.

### Do Kora Sustainability or Strand & Lock have ads?

Neither Kora Sustainability nor Strand & Lock shows ads.

### Which is updated more often, Kora Sustainability or Strand & Lock?

Kora Sustainability ships an update fortnightly, and Strand & Lock every 33 months. Most recently, Kora Sustainability was updated on November 3, 2026 and Strand & Lock on November 7, 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.*