IS RT vs Weldwise
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)
Weldwise
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Stop guessing your welder settings. Weldwise gives you a clean starting point for MIG, TIG, Stick and flux-core in seconds. Pick your process, material and thickness and get recommended amperage, voltage, wire or electrode size, wire feed speed, shielding gas and polarity. FREE - Settings finder: MIG, TIG, Stick and flux-core on mild steel, stainless and aluminum - Saved setups: keep a result with the volts and wire speed you actually ran, then load it again in one tap — or share it with your crew - Sheet gauge from 24 to 7 ga, using the right table for steel, stainless and aluminum - Weld symbols chart, drawn to AWS A2.4, with the ISO 2553 dashed line explained - Position and what's on hand: flat, horizontal, vertical or overhead, and the wire, rod or tungsten you actually have — with gas flow, filler classification, TIG cup size and AC balance - Symbol quiz: ten symbols, four answers each — beat your best - Dual shield and metal-core alongside MIG, TIG, Stick and self-shielded — with rod and wire amperage by diameter, from 0.023 in wire to 3/16 in rod - Heat input calculator in kJ/mm or kJ/in, with the arc efficiency factor that codes such as AWS D1.1 and ISO/TR 18491 ask for - Reference charts: electrodes, shielding gases, polarity, tungsten types and the fix for every common weld fault - Full metric and imperial, in 11 languages - Works on iPhone and iPad, fully offline, with no account and no ads WELDWISE PRO (one-time purchase, no subscription) - Shielding gas calculator: usage per job and what the cylinder actually costs - Filler metal calculator: deposited weight, how much to buy once stub-end and spatter loss are counted, and the cost in your own currency - Groove and pipe joints: weld metal and filler per joint for V, bevel, double V and square butt welds on plate or pipe, with the joint drawn to scale - Filler metal selector: the AWS filler for any pair of base metals, stainless to carbon steel and cast iron included - Cooling time t8/5 to EN 1011-2, right under your heat input - Back purge: time and gas to purge a stainless or titanium pipe root - Preheat and carbon equivalent: CE (IIW) and Pcm from the steel grade or your own mill certificate, with the preheat and maximum interpass temperature the joint calls for - Fillet weld size and strength: effective throat, allowable load per inch and for the whole run, and whether your leg size clears the code minimum for that thickness - Every future Pro tool included: pay once, yours forever Built by an independent developer for people who actually weld. Every value is a starting point. Always confirm against your WPS, the machine chart and a test coupon.
Screenshots
Verdict
The clearest difference is in-app purchases: IS RT at none against Weldwise's 1. Weldwise's advantage is update cadence (monthly vs every 5 months). On price, ads, device support and iOS requirement 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. Weldwise sells 1 one-off in-app purchase. IS RT asks for nothing beyond the download.
IS RT ships an update every 5 months, Weldwise monthly. The most recent releases landed on October 4, 2026 and October 16, 2026 respectively.
| Parameter | IS RT | Weldwise |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 5 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 15.6 — better | 16.0 |
| Further details — not scored | ||
| Size | 28 MB | 2 MB |
| Age rating | 17+ | 4+ |
| Developer | Institut de Soudure | ENES AYKUT AYDEMIR |
In-app purchases
IS RT
No in-app purchases
Weldwise
- Weldwise Pro$6.99








