Comparison

Super PiBench vs SSTV+

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Super PiBench

This app calculates Pi to a specified number of decimal places using a high-performance engine. It offers benchmarking, a global leaderboard, and stress testing to evaluate device performance. Users can explore Pi-related knowledge and share results.

Highlights
  • Pi computation to any decimal place
  • High-performance C/GMP engine
  • Global leaderboard for device comparison
  • Device stress testing
  • Multi-core parallel computation (Pro)
  • Pi Knowledge module
Features
Read full description

Super PiBench computes Pi to any number of decimal places using the Chudnovsky algorithm — one of the fastest known methods. Built on a high-performance C/GMP engine for dramatically fast computation, comprehensive benchmarking, and a global leaderboard to see how your device stacks up worldwide. GLOBAL LEADERBOARD (Pro) - All-time board + weekly board: refreshed every Monday, newcomers can reach the top too - Submit your benchmark score to compete with users worldwide - See where your Apple device ranks among iPhones, iPads, Macs, Apple Watches, and more - Scores verified on-device and uploaded securely via iCloud HIGH-PERFORMANCE ENGINE - Built on GMP (GNU Multiple Precision Arithmetic Library) for optimized large-number arithmetic - Chudnovsky algorithm with binary splitting: ~14 digits per term - Multi-core parallel computation with threaded binary splitting and merge (Pro) - More accurate time estimation with per-magnitude calibration APPLE WATCH - Compute Pi right on your wrist — works without iPhone - Multi-core computation and global leaderboard submission (Pro) - Digit limit raised to 10 million (Pro) - One-tap submission after calculating, with built-in time estimation PRESETS - Free: 100 / 10,000 / 100,000 / 1,000,000 digits - Pro: 10,000,000 / 20,000,000 / 50,000,000 / 100,000,000 digits - Custom input for any digit count STRESS TEST - Push your chip to the limit with repeated benchmark rounds - Free: up to 10 million digits, 5 rounds, single-core - Pro: up to 100 million digits, 20 rounds, multi-core - Bar chart visualization with color-coded best/worst results - Automatic trend detection: stable, throttling, or improving TOOLS & SHARING - Search for any number sequence with fast Boyer-Moore algorithm (Pro) - Generate and share beautiful computation result cards (Pro) - Save computation history for later review (Pro) - Copy, share, or export results with one tap KNOWLEDGE - Pi Knowledge module: fun facts, historical timeline, real-world applications, and algorithm explanations LANGUAGES - 14 languages: English, Simplified Chinese, Traditional Chinese, Japanese, Korean, German, French, Spanish, Portuguese, Italian, Dutch, Russian, Arabic, Greek DESIGN - iOS 26 Liquid Glass design: floating tab bar and glass effects throughout - Dark and light mode support - Core functionality runs entirely on-device, no internet required - Universal app: iPhone, iPad, Mac (Catalyst), and Apple Watch Free version computes up to 1,000,000 digits. Unlock Pro for global leaderboard, multi-core computing, extended stress test, digit search, history, share cards, and more.

About

SSTV+

Features
Read full description

SSTV+ is a Slow Scan Television audio encoder and decoder designed for amateur radio enthusiasts. Use your iPhone’s microphone to listen for SSTV audio signals. SSTV+ automatically detects the VIS mode and progressively reconstructs the image entirely on your device. You can also select a photo from your library, encode it as standard SSTV audio, play it through the device speaker, or export it as a WAV file. Key Features: • Receive and decode SSTV audio signals in real time • Automatically detect VIS modes • Encode photos as SSTV audio • Scale, fill, crop, and reposition images • Support Robot 36 and Robot 72 • Support Martin M1 and Martin M2 • Support Scottie S1 and Scottie S2 • Support PD 90, PD 120, and PD 180 • Keep a local history of received and transmitted images • Optionally retain original received audio • Export and share WAV audio files • Save decoded images to your Photos library Completely Offline: SSTV+ requires no account or sign-in and does not connect to any servers. Signal detection, image decoding, and audio generation are performed entirely on your device. The app contains no advertising, user tracking, analytics SDKs, or cloud synchronization. Your photos, audio, and history remain stored locally on your device. Nothing is uploaded to the developer or shared with third parties. All core features remain available without an internet connection. Permissions: • Microphone: Used only to receive and decode nearby SSTV audio signals • Photos: Used only when you choose a photo for encoding or save a decoded image SSTV+ only processes and plays audio. It does not directly transmit radio-frequency signals. When using the app with external radio equipment, please follow the amateur radio regulations applicable in your country or region.

Screenshots

Super PiBench4 screens
SSTV+2 screens

Verdict

The call

The clearest difference is in-app purchases: SSTV+ at none against Super PiBench's 1. Super PiBench's advantage is device support (3 vs 1) and iOS requirement (16.0 vs 26.0). On price and ads 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Super PiBench sells 1 one-off in-app purchase. SSTV+ asks for nothing beyond the download.

Scorecard3 real differences · 7 level
Super PiBench versus SSTV+: the parameters behind the verdict, then further details
ParameterSuper PiBenchSSTV+
PriceFreeFree
Rating5.0 (3 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings3 — better—
Update frequencyEvery 5 days—
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, Apple Watch — betteriPhone
Requires iOS16.0 — better26.0
Further details — not scored
Size18 MB4 MB
Age rating4+4+
DeveloperQianyu Zhu永升 李

In-app purchases

1 purchases

Super PiBench

One-time1
  • Pro Upgrade$0.99
None

SSTV+

No in-app purchases

Questions

Is Super PiBench free?
Super PiBench is free to download, with in-app purchases available.
Is SSTV+ free?
SSTV+ is free to download, with no in-app purchases.
Do Super PiBench or SSTV+ have ads?
Neither Super PiBench nor SSTV+ shows ads.

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