Number Rack, by MLC vs Document Camera
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Number Rack, by MLC
This virtual manipulative tool helps children develop number sense through interactive bead groupings. It supports exploration of addition and subtraction strategies with customizable rows and colors. Ideal for elementary classrooms, it includes annotation and sharing features.
- 1-10 rows of 10 beads
- Resizable bead covers for subtraction
- Color-coded bead rows
- Annotation and drawing tools
- Math text and writing tools
- Shareable work via image or code
Read full descriptionHide full description
Number Rack facilitates the natural development of children’s number sense. The movable, colored beads encourage learners to think in groups of fives and tens, helping them to explore and discover a variety of addition and subtraction strategies. This virtual version of the manipulative is an open-ended educational tool, ideal for elementary classrooms and other learning environments. FEATURES • Display 1 to 10 rows of beads, 10 beads per row. • Hide beads with resizable covers, which allows teachers or learners to model subtraction or difference problems. • Reverse the colors of rows 6 to 10 to distinguish (or not) groupings of 25 beads. • Use the drawing tools to annotate work and show understanding. • Add equations, expressions, and descriptions with the math text and writing tools. • Share work by saving an image or providing a share code to others. Great for creating the initial setup of an activity, then sharing it with students so they can explore it further.
Document Camera
Turn your iPhone into a document camera for seamless workspace sharing. Ideal for remote learning and in-classroom presentations, it integrates with popular video conferencing tools and supports screen mirroring.
- Transform iPhone into a document camera
- Screen sharing for video conferencing
- Remote learning tool
- Smart flashlight and auto-leveling
- Zoom, pan, and freeze frame
- AirPlay screen mirroring support
Read full descriptionHide full description
Transform your iPhone into the best document camera on the market with Doc Cam! Doc Cam is a straightforward app for sharing your workspace with your students, just like a document camera or old school overhead projector. Doc Cam was designed with the needs of the remote learning classroom in mind. It’s compatible with Zoom, Google Meet, Microsoft Teams, and other services through screen mirroring, all with easy step-by-step guides for setup. For teachers who have already transitioned back to the classroom, you can still use Doc Cam with modern classrooms outfitted with computers or projectors compatible with AirPlay Screen Mirroring. DOC CAM FEATURES 1. Works with Zoom, Google Meet, Screen Mirroring and more. 2. Perfect for remote learning. 3. Zoom and pan the camera. 4. Smart Flashlight - distributes the lighting evenly across the entire document camera image when the flashlight is enabled. 5. Auto Level - keeps the document camera image level even when your phone isn't. 6. Freeze video frame. 7. Transition back to the classroom with AirPlay support. 8. And more!
Screenshots
Verdict
The clearest difference is rating: Document Camera at 4.5 against Number Rack, by MLC's 3.2. Document Camera also leads on update cadence (monthly vs every 25 months) and ratings volume (338 vs 9). Number Rack, by MLC's advantage is review sentiment (100% vs 62%) and iOS requirement (14.7 vs 16.0). On price, ads, in-app purchases and monetization model 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. Neither carries in-app purchases, so what you see is what you pay.
Document Camera holds the better App Store score, 4.5 against 3.2. That said, the two scores are not equally well evidenced: Document Camera has 338 ratings behind it against 9, so its average is the more settled of the two. Written reviews complicate that: 100% of Number Rack, by MLC's written reviews are positive against 62% of Document Camera's, so the app with the better star average is not the one people write more warmly about.
Number Rack, by MLC ships an update every 25 months, Document Camera monthly. The most recent releases landed on September 28, 2026 and October 5, 2026 respectively.
| Parameter | Number Rack, by MLC | Document Camera |
|---|---|---|
| Price | Free | Free |
| Rating | 3.2 (9 ratings) | 4.5 (338 ratings) — better |
| Positive reviews | 100.0% of reviews — better | 61.5% of reviews |
| Number of ratings | 9 | 338 — better |
| Update frequency | Every 25 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPad | iPhone, iPad — better |
| Requires iOS | 14.7 — better | 16.0 |
| Further details — not scored | ||
| Size | 4 MB | 20 MB |
| Age rating | 4+ | 4+ |
| Developer | The Math Learning Center | SwiftKick Mobile LLC |
Customer experience
Number Rack, by MLC
Document Camera
Bugs and requests
Number Rack, by MLC
Not enough reviews yet to summarise bugs or requests.
Document Camera
Reported bugs
6 issues- App does not open
- App freezes on splash screen
- App requires access but no options to select
- App gets stuck on Home Screen
- Poor camera quality (fuzzy/grainy)
Show 1 moreShow fewer
- Limited rotation options
Requested features
2 requests- Support for portrait mode
- Option to rotate document 90 degrees
In-app purchases
Number Rack, by MLC
No in-app purchases
Document Camera
No in-app purchases
Questions
Is Number Rack, by MLC free?
Is Document Camera free?
Which has better reviews, Number Rack, by MLC or Document Camera?
Do Number Rack, by MLC or Document Camera have ads?
Which is updated more often, Number Rack, by MLC or Document Camera?
Other comparisons
