Comparison

Kois Reader vs IDDA

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

Head to head
About

Kois Reader

Access Kois Course materials, including manuals, checklists, and videos. Features live polling, automatic note backup and syncing across devices, and the ability to share notes with other participants. Requires course attendance for full access.

Highlights
  • Access course manuals and videos
  • Live in-course polling
  • Automatic note backup and sync
  • Share notes with participants
  • Browse page thumbnails
  • Navigation history
Features
Read full description

The Kois Reader is the new and improved method for viewing Kois Course Materials. Access your course manuals, always pages, procedure checklist, videos, etc. ** Note: Course attendance required for materials access. New Features Include: + Live in-course polling from directly within the manual while at the Kois Center. + View document size before downloading. + Notes are automatically backed up and sync across devices. + Notes can be shared between participants within a course. + The notes list displays location of, date/time created, context of the note(s). + Browse through page thumbnails. + Forward and Back buttons, returns you to previous location(s) after jumping around content.

About

IDDA

Access comprehensive digital dentistry courses and develop specialized skills. Learn from global experts and enhance your clinical career with curated materials and mentorship.

Highlights
  • Digital dentistry courses
  • Skill development
  • Global expert faculty
  • Clinical career enhancement
  • Curated reading material
  • Mentorship
Features
Read full description

We at the IDDA are delighted that you have chosen to start your journey into Digital Dentistry with these courses provided by the International Digital Dental Academy, the world’s premier independent teaching provider for digital dentistry. As a new student to the Digital Dental Academy you will have the opportunity for new experiences whilst developing skills to give you the best chance of succeeding in this ever evolving speciality. We founded the IDDA to elevate the standard of knowledge in Digital Dentistry in both the UK and internationally with an unbiased and informative approach utilising the best talent in this field from across the world. We are very pleased to be delivering these programmes to provide you with an excellent mix of experiences which will enable you to develop your career into your chosen specialist area of dental practice. Our faculty staff and lecturers in various topics in Digital Dentistry will work with you during your academic career mentoring you at each step to help you realise your full potential as a Digital Dental Master. We have carefully selected excellent lecturers, clinical studies and reading material to give you the foundation knowledge required to make informed judgements as new technology emerges, both in hardware and software. These courses will make the difference in enhancing your clinical career and ultimately providing the best level of care to your patients. On behalf of myself, Chris, Patrik and Quintus, we look forward to meeting you and wish you the very best of luck in your studies. Yours sincerely, Prof Adam Nulty Dean and Programme Director The Digital Dental Academy

Screenshots

Kois Reader4 screens
IDDA4 screens

Verdict

The call

The clearest difference is review sentiment: IDDA at 100% against Kois Reader's 20%. IDDA also leads on update cadence (monthly vs every 9 months). Kois Reader's advantage is in-app purchases (none vs 10). On price, ads, device support and iOS requirement 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

Both are free to download. IDDA sells 6 one-off in-app purchases. Kois Reader asks for nothing beyond the download.

UpkeepUpdate frequency

Kois Reader ships an update every 9 months, IDDA monthly. The most recent releases landed on August 14, 2026 and September 23, 2026 respectively.

Scorecard4 real differences · 6 level
Kois Reader versus IDDA: the parameters behind the verdict, then further details
ParameterKois ReaderIDDA
PriceFreeFree
Rating3.6 (10 ratings) — better—
Positive reviews20.0% of reviews100.0% of reviews — better
Number of ratings10 — better—
Update frequencyEvery 9 monthsMonthly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS14.0 — better15.2
Further details — not scored
Size75 MB111 MB
Age rating4+4+
DeveloperKois CenterDigital Dental Academy Ltd

Customer experience

Kois Reader

All ratings10 ratings
Positive60.0%
Neutral10.0%
Negative30.0%
Written reviews5 reviews
Positive20.0%
Neutral0.0%
Negative80.0%

IDDA

Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Kois Reader

No in-app purchases

6 purchases

IDDA

One-time6
  • Partial Extraction Therapy$199.99
  • Ultimate All On X Course$399.99
  • CAM Materials Masterclass2 variants$799.99
Show 3 more
  • Getting Started in 3D Printing2 variants$799.99
  • CAD Design Masterclass2 variants$799.99
  • Guided Implant Surgery2 variants$899.99

Questions

Is Kois Reader free?
Kois Reader is free to download, with no in-app purchases.
Is IDDA free?
IDDA is free to download, with in-app purchases available.
Do Kois Reader or IDDA have ads?
Neither Kois Reader nor IDDA shows ads.
Which is updated more often, Kois Reader or IDDA?
Kois Reader ships an update every 9 months, and IDDA monthly. Most recently, Kois Reader was updated on August 14, 2026 and IDDA on September 23, 2026.

Other comparisons