Comparison

dob vs Ling

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

Head to head
About

dob

This app offers exercises to train essential visual skills like attention, coordination, and memory. It's designed for learners of all ages, including children and individuals undergoing rehabilitation, and can be customized to individual needs.

Highlights
  • Visual Attention training
  • Ocular motility exercises
  • Hand and Eye Coordination
  • Motion Perception
  • Contrast Sensitivity
  • Face and facial expression recognition
  • Color Recognition and differentiation
  • Figure-Ground Perception
Read full description

Visual perception training Basic version for learners containing a set of 10 fixed exercises, covering the most important visual skills. Additionally there is an import area for 10 more exercises where you are able to import more exercises from dob pro - the full version for teachers and therapists. Supported languages: English, Spanish, Portuguese, German, French, Italian With the assistance of dob the learners are stimulated and supported in the following areas: Visual Attention Ocular motility Hand and Eye Coordination Motion Perception Contrast Sensitivity Face recognition and facial expression recognition Color Recognition and differentiation Figure-Ground Perception Object recognition and differentiation Visual Memory Search Strategies dob pro the full version for therapists, coaches and teachers, containing more than 2500 exercises for the training and observation of 11 basic visual skills Change size of objects or tracks with gestures, modify opacity and background. This is how to adapt the exercises to the individual needs of the learners. dob offers exercises both for adults and for children of any age. The training is suited specifically for the following area of application: Curative education - People with developmental delays, visual impairment or multiple disabilities Early childhood education - All children aged 2 to 6 years Physical rehabilitation - For example, after stroke Psychomotricity, occupational therapy and speech therapy User guide, object list, track list, video tutorials, subscription to newsletter » www.dob.li

About

Ling

This app allows users to conduct and track hearing tests using the Ling Six Sound Test. It helps verify that hearing devices are functioning correctly by playing specific speech sounds and recording results over time, replacing manual record-keeping.

Highlights
  • Conduct Ling Six Sound Tests
  • Track test results over time
  • Verify hearing device function
  • Record results for multiple users
  • Use pre-recorded male/female voices
  • Record custom voice prompts
  • Self-check hearing devices
Features
Read full description

Now you can do Ling tests and store the results over time in our handy app. The Ling Six Sound Test is used to check if the listener can hear speech sounds across the pitch range of normal speech. To understand spoken conversation successfully, you need to be able to reliably hear low to high pitch speech sounds. The RIDBC Ling Sound Test app has been created to allow you to quickly check that hearing devices (hearing aids, cochlear implants or bone conductors) are delivering speech sounds to the listener as they should from day to day. The app replaces the need to record and store test results on paper, providing useful information about the reliability of speech perception over time. The app allows a user to play each of the 6 sounds (ah, ee, mm, oo, sh, ss) during the test and record the results for one or multiple users. Ling sounds are pre-recorded in a male and a female voice, or you can record your own. These pre-recorded sounds also allow the user to self-check their devices by playing sounds in random order.

Screenshots

Ling4 screens

Verdict

The call

The clearest difference is rating: Ling at 3.0 against dob's 1.0. Ling also leads on in-app purchases (none vs 1) and device support (3 vs 1). dob's advantage is update cadence (every 3 months vs every 6 months). On price, review sentiment, ratings volume and ads 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

dob costs $2.99 and Ling $2.99 up front. dob sells 1 one-off in-app purchase. Ling asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Ling holds the better App Store score, 3.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively. Written reviews split almost evenly too, at 0% and 0% positive.

UpkeepUpdate frequency

dob ships an update every 3 months, Ling every 6 months. The most recent releases landed on October 17, 2026 and October 21, 2026 respectively.

Scorecard4 real differences · 6 level
dob versus Ling: the parameters behind the verdict, then further details
ParameterdobLing
Price$2.99$2.99
Rating1.0 (1 ratings)3.0 (1 ratings) — better
Positive reviews0.0% of reviews0.0% of reviews
Number of ratings11
Update frequencyEvery 3 months — betterEvery 6 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationPaidPaid
DevicesiPadiPhone, iPad, iPod — better
Requires iOS12.012.0
Further details — not scored
Size78 MB106 MB
Age rating4+4+
DeveloperRene Fehr-BiscioniRoyal Institute for Deaf and Blind Children

Customer experience

dob

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews2 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

Ling

All ratings1 ratings
Positive0.0%
Neutral100.0%
Negative0.0%
Written reviews1 reviews
Positive0.0%
Neutral100.0%
Negative0.0%

In-app purchases

1 purchases

dob

One-time1
  • All exercises$11.99
None

Ling

No in-app purchases

Questions

Is dob free?
dob costs $2.99, and also offers in-app purchases.
Is Ling free?
Ling costs $2.99, with no in-app purchases.
Which has better reviews, dob or Ling?
Ling is rated higher. dob averages 1.0 out of 5 from 1 ratings, while Ling averages 3.0 from 1 ratings.
Do dob or Ling have ads?
Neither dob nor Ling shows ads.
Which is updated more often, dob or Ling?
dob ships an update every 3 months, and Ling every 6 months. Most recently, dob was updated on October 17, 2026 and Ling on October 21, 2026.

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