KartBalance vs Simple Interceptor
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
KartBalance
This tool helps racing kart enthusiasts optimize weight distribution and chassis balance for improved handling and consistency. It allows users to virtually adjust weights on a visual chassis diagram and see real-time center of gravity changes before making physical modifications.
- Visual chassis with drag-and-drop weight placement
- Real-time corner weight calculations
- Center of gravity visualization
- Save unlimited kart configurations
- Support for any weight units
- Negative weights for simulated weight removal
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KartBalance – Kart Setup Tool KartBalance is a professional weight distribution and chassis balance calculator for racing karts, used by competitive racers, mechanics, and teams to dial in precise setups with confidence. Stop guessing your kart setup and start making informed adjustments using real weight data. ---- Perfect Your Kart Setup Whether you’re a competitive racer, kart parent, mechanic, or team manager, KartBalance helps you achieve optimal weight distribution and balanced corner weights for better handling and consistency on track. A properly balanced kart turns the same left and right (unless you only turn left), responds predictably, and builds driver confidence. KartBalance helps you get there faster. ---- How It Works • Weigh your kart using four bathroom scales (one per tire) • Enter corner weights into the app • Add and position weights on the visual chassis diagram • Drag weights to see real-time center of gravity changes • Find the best mounting location before drilling holes Make setup changes virtually before making them permanent. ---- Key Features • Visual kart chassis with drag-and-drop weight placement • Real-time corner weight calculations • Front/rear and left/right percentage display • Center of gravity visualization • Save unlimited kart configurations • Support for any weight units (lbs, kg, and more) • Negative weights to simulate weight removal Designed to be fast and usable at the track between sessions. ---- Why Weight Distribution Matters Proper chassis balance is critical for competitive karting. Too much front weight can cause understeer. Too much rear weight can lead to oversteer. Uneven left-to-right balance can make a kart unpredictable. KartBalance takes the guesswork out of setup and helps you find the right balance faster, so you can focus on driving. ---- Built for Serious Karting KartBalance works offline, is simple to use trackside, and scales from beginner setups to advanced tuning. Whether you are learning kart setup fundamentals or fine-tuning a race-winning chassis, KartBalance gives you clear, actionable data you can trust. Download KartBalance and take control of your kart’s setup.
Simple Interceptor
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Simple Interceptor = Postman + Charles, on your mobile device. Capture, inspect, and replay HTTP/HTTPS traffic — anywhere, anytime, without a desktop. Whether you're debugging an API on the go, reverse-engineering a third-party SDK, or verifying your app's network behavior in the field, Simple Interceptor gives you the power of professional desktop tools in a single mobile app. — CAPTURE & DECRYPT HTTPS TRAFFIC — • Real-time interception of all HTTP and HTTPS connections • Built-in MITM proxy with automatic CA certificate generation • View full request & response headers, bodies, and timing • Decode gzip, deflate, and Brotli compressed responses automatically • Filter by domain, HTTP method, status code, or full-text search • Domain whitelist/blacklist rules for focused capture sessions — BUILD & SEND REQUESTS (like Postman) — • Craft custom HTTP requests with any method, headers, and body • Import cURL commands directly — paste from docs, Slack, or terminal • Inspect full responses with syntax-highlighted body preview • Re-send captured traffic to reproduce or modify requests instantly • Request history with iCloud sync across all your devices — EXPORT & SHARE — • Convert any captured request to a ready-to-run cURL command • Copy headers, bodies, or full responses to clipboard • Share diagnostic logs for team collaboration — EXTRAS — • NFC tag reading and writing (text, URL, custom MIME) • Apple Sign-In with iCloud profile sync • Unified log viewer with source and severity filtering • Step-by-step certificate installation guide — WHO IS IT FOR? — • Mobile developers testing APIs without a laptop • QA engineers verifying network behavior on real devices • Security researchers analyzing HTTPS traffic • Backend developers debugging webhooks and callbacks • Anyone who needs Charles or Postman while working on a mobile device No Mac required. No USB cable. No complicated setup. Just install, tap Capture, and start inspecting. Privacy first — your traffic data stays on your device unless you choose to sync via iCloud.
Screenshots
Verdict
The clearest difference is update cadence: Simple Interceptor at every 2 weeks against KartBalance's every 2 months. Simple Interceptor also leads on price ($0.99 vs $4.99). KartBalance's advantage is chart position (#190 vs unranked) and iOS requirement (16.6 vs 18.5). On ads, in-app purchases and device support 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
KartBalance costs $4.99 and Simple Interceptor $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
KartBalance ships an update every 2 months, Simple Interceptor every 2 weeks. Both last shipped on October 24, 2026.
| Parameter | KartBalance | Simple Interceptor |
|---|---|---|
| Price | $4.99 | $0.99 — better |
| Rating | 4.7 (9 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 9 — better | — |
| Update frequency | Every 2 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Best chart rank | #190 — better | — |
| Devices | iPhone | iPhone, Mac — better |
| Requires iOS | 16.6 — better | 18.5 |
| Further details — not scored | ||
| Size | 5 MB | 12 MB |
| Age rating | 12+ | +4 |
| Developer | Jonathan Alter | Jie Tian |
In-app purchases
KartBalance
No in-app purchases
Simple Interceptor
No in-app purchases
Questions
Is KartBalance free?
Is Simple Interceptor free?
Do KartBalance or Simple Interceptor have ads?
Which is updated more often, KartBalance or Simple Interceptor?
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