# SupplyMaster vs Octopus Watch

The clearest difference is review sentiment: Octopus Watch at 65% against SupplyMaster's 11%. Octopus Watch also leads on rating (4.0 vs 3.0). SupplyMaster's advantage is price (Free vs $1.99) and in-app purchases (none vs 2). On ratings volume, update cadence, ads and device support there is nothing between them.

SupplyMaster is free to download; Octopus Watch costs $1.99 up front. Octopus Watch sells 2 in-app purchases, starting at $1.99 per month. SupplyMaster asks for nothing beyond the download.

Octopus Watch holds the better App Store score, 4.0 against 3.0. Both are backed by a comparable volume of ratings — 2 and 1 respectively. Written reviews point the same way: 11% of SupplyMaster's written reviews are positive against 65% of Octopus Watch's.

SupplyMaster ships an update every 5 weeks, Octopus Watch every 3 weeks. The most recent releases landed on June 9, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | SupplyMaster | Octopus Watch |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | [3.0 (2 ratings)](https://appshunter.io/ios/app/supplymaster/id1204680294/reviews) | **[4.0 (1 ratings)](https://appshunter.io/ios/app/octopus-watch/id1490260614/reviews)** |
| Number of ratings | **2** | 1 |
| Positive reviews | 11.4% of reviews | **64.6% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 3 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 18 MB | 18 MB |
| Requires iOS | **11.0** | 16.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [TIMEGUARD LTD](https://appshunter.io/developer/1204680293) | [Kim Bauters](https://appshunter.io/developer/1451850103) |

## What reviewers say

### SupplyMaster

[App page](https://appshunter.io/ios/app/supplymaster/id1204680294)

Control your immersion heater or lighting remotely via your phone or tablet. Save money by adjusting schedules from anywhere, ensuring you only use energy when needed. Offers multiple operating modes for flexible control.

**Highlights:** Remote programming, Energy saving, Auto, Permanent Off, Permanent On modes, Holiday mode, Advance and Boost functions

**Features:** macOS Compatibility

**In-app purchases:** none


### Octopus Watch

[App page](https://appshunter.io/ios/app/octopus-watch/id1490260614)

Easily manage your Octopus Energy tariffs, track electricity rates, and identify optimal times to use appliances or charge your EV. Offers insights into usage, weather impacts, and export earnings. Optional subscription unlocks advanced features like 48-hour rate predictions and carbon integration.

**Highlights:** Track current and upcoming electricity rates, Identify cheapest times for appliances/EV charging, View historic usage and micro metrics, Receive rate change alerts, Compare tariffs, Export data to CSV, 48h Agile rate predictions (subscription)

**Features:** Family Sharing, Apple Watch app, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Month Subscription | $1.99 | per month |
| 1 Year Subscription | $11.99 | per year |


## Frequently asked questions

### Is SupplyMaster free?

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

### Is Octopus Watch free?

Octopus Watch costs $1.99, and also offers in-app purchases.

### Which has better reviews, SupplyMaster or Octopus Watch?

Octopus Watch is rated higher. SupplyMaster averages 3.0 out of 5 from 2 ratings, while Octopus Watch averages 4.0 from 1 ratings.

### Do SupplyMaster or Octopus Watch have ads?

Neither SupplyMaster nor Octopus Watch shows ads.

### Which is updated more often, SupplyMaster or Octopus Watch?

SupplyMaster ships an update every 5 weeks, and Octopus Watch every 3 weeks. Most recently, SupplyMaster was updated on June 9, 2026 and Octopus Watch on September 23, 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.*