# Spark by CelcomDigi vs Theosys

The clearest difference is ads: Theosys at none against Spark by CelcomDigi's shown. Theosys also leads on iOS requirement (12.0 vs 16.0). On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Spark by CelcomDigi ships an update monthly, Theosys every 6 weeks. The most recent releases landed on October 24, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Spark by CelcomDigi | Theosys |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (86 ratings)](https://appshunter.io/ios/app/spark-by-celcomdigi/id1324469029/reviews)** | — |
| Number of ratings | **86** | — |
| Positive reviews | 67.8% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Monthly** | Every 6 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 125 MB | 37 MB |
| Requires iOS | 16.0 | **12.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [CelcomDigi Telecommunications Sdn Bhd](https://appshunter.io/developer/391897541) | [Theosys Infotech Private Limited](https://appshunter.io/developer/1450486025) |

## What reviewers say

### Spark by CelcomDigi

[App page](https://appshunter.io/ios/app/spark-by-celcomdigi/id1324469029)

A digital-first mobile experience offering instant eSIM activation and flexible plan management. Control multiple lines, upgrade or downgrade plans, and access support all within the app.

**Highlights:** Instant eSIM activation, Flexible plan management, Manage up to 5 lines, Affordable plans from RM15/month, On-demand roaming, Live in-app support

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

**In-app purchases:** none


### Theosys

[App page](https://appshunter.io/ios/app/theosys/id1450486026)

**In-app purchases:** none


## Frequently asked questions

### Is Spark by CelcomDigi free?

Spark by CelcomDigi is free to download, with no in-app purchases.

### Is Theosys free?

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

### Do Spark by CelcomDigi or Theosys have ads?

Spark by CelcomDigi shows ads; Theosys does not.

### Which is updated more often, Spark by CelcomDigi or Theosys?

Spark by CelcomDigi ships an update monthly, and Theosys every 6 weeks. Most recently, Spark by CelcomDigi was updated on October 24, 2026 and Theosys on October 1, 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.*