Comparison

STL Viewer vs Countpad

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

STL Viewer

Visualize e inspecione modelos 3D STL em seu dispositivo. Oferece ferramentas avançadas para medição, análise de malha e geração de relatórios PDF. Ideal para engenharia, impressão 3D e revisão técnica.

Highlights
  • Multitouch rotation, pan, and zoom
  • Wireframe, X-Ray, and normal orientation modes
  • Precise point-to-point measurement
  • Interactive cutting plane
  • Mesh health diagnostics
  • Generate PDF technical reports
Features
Read full description

Open STL models on iPhone and iPad, and work with local 3D mesh projects. STL Viewer by Transfer.med.br combines a native viewer with optional Pro and Studio tools. BASIC VIEWER Open binary or ASCII STL files. Orbit, pan and zoom, switch camera views, and inspect basic model information in solid or wireframe mode. PRO WORKSPACE Build with primitives and profiles; extrude and revolve shapes. Transform objects, preview Boolean operations and plane cuts, and use mesh repair tools. Organize multiple objects in local projects with undo, redo and saved revisions. Measure distances, angles and radii, and inspect sampled estimates of wall thickness and surface deviation. Export STL, OBJ, PLY, 3MF and GLB files, capture PNG images, and opt into project reminders. STUDIO REPORTS Studio includes Pro and adds local PDF reports with project information, geometry summaries and inspection annotations. IMPORTANT LIMITS Models are processed on your device, not uploaded to our servers. Projects and revisions are local. This app does not include cloud collaboration, SSO, STEP/B-rep CAD or manufacturing certification. Thickness and surface comparisons are sampled estimates, not certified measurements. File formats and mesh operations have safety limits and restrictions shown in the tools. STL does not record units; choose the correct unit for your model. OPTIONAL PLANS The app download is paid. Basic viewing needs no subscription. Creation, editing and advanced inspection require Pro or Studio; PDF reports require Studio. Monthly/annual subscriptions and Pro Lifetime are optional. The App Store displays prices and periods before purchase. Subscriptions renew automatically until cancelled in your Apple account settings. Restore Purchases is available in the app. Terms: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy: https://softwareideal.com.br/policy.html Support: https://softwareideal.com.br

About

Countpad

Easily track your stock with this fast, offline inventory management tool. Add items, adjust quantities, scan barcodes, and generate reports in PDF or CSV format. Ideal for individuals needing accurate counts without complex features.

Highlights
  • Offline stock counting
  • Barcode scanning
  • Instant search and filtering
  • PDF and CSV report generation
  • Cloud backup and restore
  • Optional shared inventory
Features
Read full description

Countpad is a small, fast inventory tracker for people who just need the numbers to be right. Open it, add your items, and count. Tap + or − straight from the list, or tap the number to type it in when there are 143 of something. That is the whole idea. WHAT IT DOES • Count from the list — increase or decrease without opening a detail screen • Scan a barcode to jump to an item, or to create one with the barcode attached • Search instantly across name, barcode, category and unit • Filter by category, or by what is in stock, running low or run out • Create a report in one tap — a clean PDF and a CSV, ready to share or print • Back up everything to one portable file in a folder you choose, and restore it later • Add a photo when two items look alike, and a unit cost when you want a report to total it WORKS WITHOUT A CONNECTION Counting, search, filters, reports and backups all work in airplane mode, in a stockroom with no signal. Your inventory is stored on your device. NO ACCOUNT NEEDED. NO ADS. No sign-up, no email, no password. Open the app and start counting. Nothing interrupts counting. COUNTPAD PRO Counting, searching, filtering, scanning, the quick report and backup and restore are free for everyone, with no item limit. Countpad Pro adds more for a growing business: advanced reports, an Alerts tab that tells you what needs attention, a Dashboard of your stock, locked backups and Automatic backup. Your first use starts a 30-day period inside the app so you can try them. Pro is available as a monthly or yearly subscription, or as a one-time Lifetime purchase. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://gist.github.com/hjatupon/21ebe78638c416a5373e3b1a766eb433

Screenshots

STL Viewer2 screens
Countpad4 screens

Verdict

The call

The clearest difference is review sentiment: STL Viewer at 100% against Countpad's 0%. STL Viewer also leads on chart position (#121 vs unranked). Countpad's advantage is price (Free vs $0.99) and update cadence (every 5 days vs every 6 weeks). On ads, in-app purchases, monetization model 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

CostPrice · In-app purchases · Ads · Monetization

Countpad is free to download; STL Viewer costs $0.99 up front. STL Viewer sells 5 in-app purchases, starting at $2.99 per month and Countpad sells 10 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

STL Viewer ships an update every 6 weeks, Countpad every 5 days. The most recent releases landed on October 27, 2026 and October 25, 2026 respectively.

Scorecard4 real differences · 5 level
STL Viewer versus Countpad: the parameters behind the verdict, then further details
ParameterSTL ViewerCountpad
Price$0.99Free — better
Positive reviews100.0% of reviews — better0.0% of reviews
Update frequencyEvery 6 weeksEvery 5 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
Best chart rank#121 — better—
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.017.0
Further details — not scored
Size5 MB26 MB
Age rating4+4+
DeveloperFelipe Marques de BarrosJatupon Hongweing

Customer experience

STL Viewer

Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Countpad

Written reviews1 reviews
Positive0.0%
Neutral100.0%
Negative0.0%

In-app purchases

5 purchases

STL Viewer

Subscriptions4
  • STL Viewer Pro Mensal$2.991 Month
  • STL Viewer Studio Mensal$5.991 Month
  • STL Viewer Pro Anual$22.991 Year
Show 1 more
  • STL Viewer Studio Anual$49.991 Year
One-time1
  • STL Viewer Pro Vitalício$39.99
10 purchases

Countpad

Subscriptions6
  • Countpad Cloud — Starter$2.991 Month
  • Countpad Cloud — Shop$4.991 Month
  • Countpad Cloud — Business$9.991 Month
Show 3 more
  • Pro Monthly$9.991 Month
  • Shared Inventory$29.991 Month
  • Pro Yearly$59.991 Year
One-time4
  • Remove Ads$4.99
  • Remove Ads$9.99
  • Remove Ads$14.99
Show 1 more
  • Pro Lifetime$99.99

Questions

Is STL Viewer free?
STL Viewer costs $0.99, and also offers in-app purchases.
Is Countpad free?
Countpad is free to download, with in-app purchases available.
Do STL Viewer or Countpad have ads?
Neither STL Viewer nor Countpad shows ads.
Which is updated more often, STL Viewer or Countpad?
STL Viewer ships an update every 6 weeks, and Countpad every 5 days. Most recently, STL Viewer was updated on October 27, 2026 and Countpad on October 25, 2026.

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