Drill Calc vs cDs Online
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Drill Calc
This utility app helps you determine the correct drill bit size for threaded holes. It supports both inch and metric threads, calculates close and tight fit hole sizes, and provides tables for standard drill bit sizes and pipe information.
- Calculates drill bit size for threaded holes
- Supports inch and metric threads
- Displays close and tight fit hole sizes
- Includes standard inch fractional and numeric drill bit tables
- Provides pipe size information
- Offers data on common wood screw sizes
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Need to find the right drill bit size for a hole? Drill Calc calculates the correct drill bit size to use for threaded holes, based on the bolt (tap) diameter and thread pitch and percentage, for both inch and metric threads. Close and tight fit hole sizes for many popular drill sizes are also displayed. It also has tables of standard inch fractional and numeric drill bit sizes, as well as complete information for various pipe sizes. There is also detailed information about the commonly used sizes of wood screws. Buy your copy of Drill Calc today, and put away your drill chart.
cDs Online
This app allows agents to sync and showcase client portfolios, videos, and polaroids on iOS devices. Agents can create custom packages with their branding for client reviews, managing talent displays and accessing their client database.
- Offline viewing of imaging packages
- Create and sync client packages
- Display portfolios, videos, and polaroids
- Customizable branding with agency logo
- Access client database
- Agent-controlled talent display
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Agents are able to sync their CDS Imaging Packages with an Iphone or iPad for offline viewing. In three simple steps you can produce beautiful packages for client reviews: 1. Create package 2. Sync the app 3. Showcase the package to the client. Highlights - display portfolio, videos and polaroid’s for each model/talent/artists - display with agency logo and colors to increase branding awarness -convenient way to market your talents -creativity at your fingertips no matter where you are -Agent in control of what talents/artists/models are displaying - Access to your client database
Screenshots
Verdict
The clearest difference is price: cDs Online at Free against Drill Calc's $2.99. cDs Online also leads on update cadence (monthly vs every 18 months) and iOS requirement (9.0 vs 12.0). Drill Calc's advantage is rating (4.1 vs 1.0) and ratings volume (19 vs 3). 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
cDs Online is free to download; Drill Calc costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Drill Calc holds the better App Store score, 4.1 against 1.0. That said, the two scores are not equally well evidenced: Drill Calc has 19 ratings behind it against 3, so its average is the more settled of the two.
Drill Calc ships an update every 18 months, cDs Online monthly. The most recent releases landed on October 21, 2026 and October 10, 2026 respectively.
| Parameter | Drill Calc | cDs Online |
|---|---|---|
| Price | $2.99 | Free — better |
| Rating | 4.1 (19 ratings) — better | 1.0 (3 ratings) |
| Positive reviews | 91.7% of reviews | — |
| Number of ratings | 19 — better | 3 |
| Update frequency | Every 18 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 | 9.0 — better |
| Further details — not scored | ||
| Size | 5 MB | 14 MB |
| Age rating | 4+ | 4+ |
| Developer | Black Cat Systems | cDsGlobal |
Customer experience
Drill Calc
cDs Online
In-app purchases
Drill Calc
No in-app purchases
cDs Online
No in-app purchases
Questions
Is Drill Calc free?
Is cDs Online free?
Which has better reviews, Drill Calc or cDs Online?
Do Drill Calc or cDs Online have ads?
Which is updated more often, Drill Calc or cDs Online?
Other comparisons
