IS RT vs WeldMaster
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
IS RT
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IS RT vous permet d’accéder à plusieurs fonctionnalités, dont : - Calcul de temps de pose en Ir192 et Se75 - Estimation de la distance focale mini - Estimation du flou géométrique - Prise en compte des matériaux - Prise en compte des coefficients de rapidité des films IS RT provides access to several features, including: - Exposure time calculation for Ir192 and Se75 sources - Estimation of source-film minimal distance - Estimation of geometric unsharpness - Consideration of material types - Consideration of film speed coefficients (R-factor)
WeldMaster
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WeldMaster gives starting-point welding settings for MIG, flux-core, stick and TIG, offline. Pick process, metal and thickness; get amps, volts, wire speed, gas flow and polarity. FREE • MIG (GMAW): mild steel, stainless and aluminum, every wire size and gas • Welding position: flat, vertical or overhead • Filler & Cost: weight and cost of a fillet weld • Gauge chart: gauge, inches and millimeters • 3 troubleshooting guides with bead diagrams • Imperial or metric units PRO (optional) • Flux-core (self-shielded and dual-shield), stick and TIG • Heat input with a travel-speed timer, preheat and carbon equivalent • Electrode chart and filler-metal selector • All 14 troubleshooting guides • My Setups: save the settings that worked • My Machine: see results on your own wire dial and voltage steps • No ads Weekly, monthly, yearly or pay-once plans. GOOD TO KNOW Every result is a range to start from: tune it to your machine, your material and your WPS. No machine models are built in. The app is not a substitute for a welding procedure or code requirements. Terms of Use: https://ghapps1.wordpress.com/terms-condition/ Privacy Policy: https://ghapps1.wordpress.com/privacy-policy/
Screenshots
Verdict
The clearest difference is in-app purchases: IS RT at none against WeldMaster's 4. IS RT also leads on ads (none vs shown) and iOS requirement (15.6 vs 17.0). WeldMaster's advantage is update cadence (every 9 days vs every 5 months). On price 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
Both are free to download. WeldMaster sells 4 in-app purchases, starting at $0.99 per 7 days. IS RT asks for nothing beyond the download.
IS RT ships an update every 5 months, WeldMaster every 9 days. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.
| Parameter | IS RT | WeldMaster |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 5 months | Every 9 days — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 15.6 — better | 17.0 |
| Further details — not scored | ||
| Size | 28 MB | 7 MB |
| Age rating | 17+ | 4+ |
| Developer | Institut de Soudure | Grima Hdez |
In-app purchases
IS RT
No in-app purchases
WeldMaster
- WeldMaster Pro Weekly$0.997 Days
- WeldMaster Pro Monthly$1.991 Month
- WeldMaster Pro Yearly$2.991 Year
- WeldMaster Pro$4.99








