GraphCalcPro2Go vs tapSOS
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
GraphCalcPro2Go
This advanced scientific calculator offers ultra-high precision and a wide range of functions, replicating expensive handheld devices with added iOS capabilities. It supports both standard and RPN modes, includes built-in constants, and syncs across devices via iCloud. Users can also create graphs and share calculations.
- Ultra high precision and range
- Standard (in-fix) and RPN modes
- Built-in constants and unit conversions
- iCloud sync across devices
- Create and share graphs
- Apple Watch compatibility
Read full descriptionHide full description
GraphCalcPro2Go is an advanced scientific calculator, offering features found on expensive handheld calculators, but with additional capabilities not possible with handhelds, thanks to iOS. Features include: • No ads. Ever. • Ultra high precision and range • Intuitive and easy to use • Standard (in-fix) and RPN modes • Built-in constants and unit conversions • iCloud sync With iCloud sync, you can synchronize your calculation history with GraphCalcPro2Go on all your iOS devices, and with GraphCalcPro on your Macs. Sharing feature allows you to share your calculation history with other users running GraphCalcPro2Go on their iOS devices and GraphCalcPro on their Macs. Additionally, you can create beautiful graphs with GCP2Go at the touch of a button. And now, you can run GCP2Go on your Apple Watch. GCP2Go on Apple Watch has the precision, performance, and all the scientific functions available on the iOS version - and graphing capability! Sync constants, and optionally history, between GCP2Go on your iPhone and your Apple Watch. Premium upgrade adds additional features, including: • Graph multiple equations simultaneously • Graph printing and sharing • Additional built-in constants, fully customizable • iCloud sync and sharing of user constants
tapSOS
This app provides instant emergency alerts by notifying your contacts with your live location and activating a loud alarm with flashing lights. It prioritizes user privacy, only sharing data during emergencies, and offers easy setup for multiple contacts and custom safety settings.
- One-tap SOS alerts
- Real-time location sharing
- Loud alarm and strobe light
- Privacy-focused data sharing
- Easy contact setup
- Customizable safety settings
Read full descriptionHide full description
tapSOS: Your Instant Emergency Response App Get help with just one tap. tapSOS instantly alerts your emergency contacts, shares your real-time location, and activates a loud alarm with flashing lights—all while maintaining your privacy. Key Features: • One-Tap SOS: Instantly alert your emergency contacts with your live location • Loud Alarm & Strobe Light: Attract attention and deter threats • Privacy-Focused: Your data is only shared during emergencies • Easy Setup: Add multiple emergency contacts and customize your safety settings Perfect for: • Parents monitoring children's safety • Night-time commuters • Solo travelers • Anyone who wants peace of mind Stay safe. Stay connected. Download tapSOS today. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.roundzboxing.com/tapsos/privacy
Screenshots
Verdict
The clearest difference is update cadence: tapSOS at every 6 days against GraphCalcPro2Go's every 3 months. tapSOS also leads on rating (5.0 vs 4.6). GraphCalcPro2Go's advantage is ratings volume (42 vs 1) and device support (3 vs 1). On price, ads, in-app purchases and monetization model there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. GraphCalcPro2Go sells 1 one-off in-app purchase and tapSOS sells 1 in-app purchase, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.
tapSOS holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: GraphCalcPro2Go has 42 ratings behind it against 1, so its average is the more settled of the two.
GraphCalcPro2Go ships an update every 3 months, tapSOS every 6 days. Both last shipped on October 24, 2026.
| Parameter | GraphCalcPro2Go | tapSOS |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (42 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 80.0% of reviews | — |
| Number of ratings | 42 — better | 1 |
| Update frequency | Every 3 months | Every 6 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, Apple Watch — better | iPhone |
| Requires iOS | 18.6 | 18.0 — better |
| Further details — not scored | ||
| Size | 9 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Starware Software LLC | Steve Noble |
Customer experience
GraphCalcPro2Go
tapSOS
In-app purchases
GraphCalcPro2Go
- Premium$0.99
tapSOS
- Location Sharing Monthly$2.991 Month
