UPMR Tools vs Carit
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
UPMR Tools
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This app offers a wide range of tools and useful information for professionals from the jewellery industry. Easy to use calculators for scrap valuation, karat calculations for casting, and conversions, as well as spot prices for precious metals including Gold, Silver, Platinum & Palladium.
Carit
This toolkit assists bench jewelers with calculations for ring sizing, metal valuation, stone dimensions, and alloy mixing. It offers a comprehensive reference library and quote building tools, with a free tier and a Pro version for advanced features.
- Ring size and stone size charts
- Live precious metal spot prices
- Metal value and casting weight calculators
- Unit and alloy conversion tools
- Model and reference library
- Quote builder with export
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Carit is the essential calculator app for bench jewelers. Built by a working jeweler who got tired of spreadsheets, scrap paper, and guesswork. FREE FEATURES: - Ring size chart with international size systems - Live gold, silver, platinum and palladium spot prices - Stone size charts - round + 10 fancy shapes - Ring blank length - strip length for any ring size and gauge - Unit converter - weight and length, including fractions - Gemstones reference - 30 languages, multi-currency support PRO FEATURES (7-day free trial): - Metal value calculator - melt value at live spot, all karats - Casting weight - CAD/wax volume to metal weight, live pricing - Wire, sheet and tube weight calculator, live pricing - Investment mixing and burnout - flask volume and casting plan - Models Library - save your molds and CAD models, priced in any alloy - Reference library - gauges, alloys, saw blades, files, abrasives, solders - Ring weight, live pricing - Sizing calculator, live pricing - Stone weight estimation from dimensions - Pave TCW counter - Eternity calculator - Halo calculator - stone count, spacing and fit around any center stone - Parallel heel - V graver heel and rotation for dual-angle fixture - STL Viewer with ring size identification and live metal pricing - Polygon ring layout calculator - Alloy mixing - build or convert any gold/silver alloy - Scrap buying calculator - what to pay for scrap metal - Full quote builder with import and export (XLSX) and local saving Whether you're sizing a ring, quoting a commission, or mixing an alloy at the bench - Carit gives you the answer in seconds. NO ACCOUNT NEEDED Carit works without an email, login, or signup. Your data stays on your device. WHO IT'S FOR - Bench jewelers and goldsmiths - Silversmiths and metalsmiths - Custom and bespoke makers - Repair and restoration workshops - Jewelry students and apprentices - Independent designers and small studios Built by a working jeweler. For jewelers. Questions or feedback? Email hello@getcarit.com or visit getcarit.com. Terms of Use: https://getcarit.com/terms.html Privacy Policy: https://getcarit.com/privacy.html
Screenshots
Verdict
The clearest difference is in-app purchases: UPMR Tools at none against Carit's 2. UPMR Tools also leads on iOS requirement (12.0 vs 15.1). Carit's advantage is update cadence (fortnightly vs every 3 months). On price, ads 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. Carit sells 2 in-app purchases, starting at $8.99 per month. UPMR Tools asks for nothing beyond the download.
UPMR Tools ships an update every 3 months, Carit fortnightly. The most recent releases landed on September 5, 2026 and August 23, 2026 respectively.
| Parameter | UPMR Tools | Carit |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.9 (9 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 9 — better |
| Update frequency | Every 3 months | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Freemium |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 12.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 27 MB | 87 MB |
| Age rating | 4+ | 4+ |
| Developer | United Precious Metal Refining, Inc. | Atelier Barnard SL |
In-app purchases
UPMR Tools
No in-app purchases
Carit
- Carit Pro Monthly Subscription7 Days trial$8.991 Month
- Carit Pro Yearly Subscription7 Days trial$69.991 Year
Questions
Is UPMR Tools free?
Is Carit free?
Do UPMR Tools or Carit have ads?
Which is updated more often, UPMR Tools or Carit?
Other comparisons
