MechTab vs Zorya
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
MechTab
This app offers a comprehensive set of tools for mechanics, providing essential data on tolerances, threads, cutting speeds, wrench sizes, and roughness. It also includes calculators for material weight, triangle properties, and trowalisation.
- ISO-Tolerance data (holes and shafts)
- Thread specifications
- Cutting data calculations
- Wrench size conversions
- Roughness parameters
- Material weight calculator
- Triangle property calculator
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Werder AG introduces the ultimate tool for mechanics. MechTab provides information about ISO-Tolerances, Threads, Cutting Data, Wrench Size and Roughness. Tolerances: A - ZC, holes and shafts General Tolerances: Charts for linear dimensions, radii/chamfer and angular dimensions. Geometrical Tolerances: Symbols, drawings and explanations as well as charts for the different geometrical tolerances. Threads: BA, BSF, G, Heli-Coil, M, MF, Pg, Tr, UNC, UNEF, UNF, W, Metric-Non-Standard Cutting Data: Cutting Speed and Spindle Speed, Feed Rates, Processing duration Wrench-Size to Width across Corners: 4-,6-8-,10-,12-,14-Cornered Torque: 3.6, 6.9, 8.8, 10.9, 12.9 Roughness: Rz, Ra, N, Triangle-Notation Weight: calculate the weight of different materials in different profiles. Material list is editable. Triangle: calculate sides, angles and the area of a triangle by entering 3 values according to a drawing. Trowalisation: calculate the number of pieces
Zorya
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Zorya turns your saved links into a living, visual library — not a forgotten graveyard of bookmarks. SAVE FROM ANYWHERE Copy a URL and Zorya detects it instantly, offering to save it with a single tap. Or use the Share extension directly from Safari, Chrome, or any other app. GRAPH VIEW See your entire library as an interactive constellation. Tags become nodes — sized by how many links they hold, connected to each other when links share multiple tags. Drag, explore, filter. LIST VIEW A clean, fast list with swipe actions, smart filters, and full-text search. Sort by date, filter by tag combinations, or jump straight into a Smart Collection. SMART COLLECTIONS Zorya automatically organises your links into collections like Overdue, Read This Week, Never Opened, Broken Links, and more — with no setup required. READ LATER Mark links with a deadline. Choose from quick presets (+1d, +3w, +1m) or pick a custom date. The home screen widget shows your read list at a glance and alerts you to overdue links. TAGS & GROUPS Build a tag system that works the way your mind does. Group related tags into folders, merge duplicates, and filter by multiple tags at once using AND or OR logic. SHARE EXTENSION Save links directly from any browser or app. Add a note, assign tags, and mark as Read Later — all without leaving what you were doing. ICLOUD SYNC Your library syncs silently across all your devices via iCloud. No account, no password, no subscription. IMPORT & EXPORT Full JSON export and import. Your data is always yours. ———— Zorya has no ads, no tracking, and no subscription.
Screenshots
Verdict
The clearest difference is price: MechTab at Free against Zorya's $1.99. MechTab also leads on iOS requirement (15.0 vs 18.2). Zorya's advantage is update cadence (every 2 days vs every 9 months). 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
MechTab is free to download; Zorya costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
MechTab ships an update every 9 months, Zorya every 2 days. Both last shipped on October 24, 2026.
| Parameter | MechTab | Zorya |
|---|---|---|
| Price | Free — better | $1.99 |
| Rating | 4.1 (16 ratings) — better | — |
| Positive reviews | 88.6% of reviews | — |
| Number of ratings | 16 — better | — |
| Update frequency | Every 9 months | Every 2 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 15.0 — better | 18.2 |
| Further details — not scored | ||
| Size | 9 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | Werder AG | Nikola Lukic |
In-app purchases
MechTab
No in-app purchases
Zorya
No in-app purchases









