The Research Behind the Tools
Most apps describe themselves as research-based. Tinnitus Toolkit goes further: every therapy links to a specific peer-reviewed paper — named authors, journal, year, and sample size. You can read the same sources that informed the design.
Results reported in studies reflect group averages under controlled conditions. Individual responses vary. This is a self-management tool, not a medical device.
CBT is one of the most consistently supported interventions for tinnitus. A 2026 umbrella review of 44 systematic reviews found CBT reliably improved tinnitus-related outcomes across studies, with THI reductions of up to 14.5 points (p < 0.001) — placing it alongside hearing aids and sound therapy as a first-line approach with consistent evidence.1
A 2025 meta-analysis of nine randomised controlled trials looked specifically at internet-based and mobile-delivered CBT (i-CBT), finding significant improvements in tinnitus functional impact, insomnia, anxiety, and depression. The authors concluded that i-CBT is a viable, accessible, and low-cost delivery format — particularly in settings where specialist clinical access is limited.2
The CBT course in Tinnitus Toolkit follows the same principles as clinical CBT for tinnitus: attention training, response inhibition, and gradually reducing the threat value of the sound. It is not a replacement for clinical care, but the evidence for self-directed delivery is well-established.
1 Chen K et al. Outcomes of Tinnitus Interventions: An Umbrella Review of Systematic Reviews with Meta-Analysis. Ann Otol Rhinol Laryngol. 2026;135(5):342–355. doi.org/10.1177/00034894251394754
2 Xian Q et al. Effects of Internet-based and mobile device-based cognitive behavioral therapy on tinnitus intervention: a systematic review and meta-analysis. Explore (NY). 2025;21(5):103238. doi.org/10.1016/j.explore.2025.103238
The study
82 adults with chronic tinnitus listened to personalised broadband noise — shaped to their individual hearing profile — for one hour per day over four months. Around 82% responded positively. Tinnitus severity scores improved by approximately 50% on both the THI and TFI scales (p < 0.001). The protocol was found to be around 20 times more time-efficient per listening hour than standard tinnitus retraining therapy.
What it means for the app
The EAE therapy uses the same principle: broadband sound shaped to your audiogram. If you have entered your hearing profile during setup, the sound adapts accordingly. The study protocol was one hour of consistent, low-volume background listening — not reactive use in response to symptoms.
The study
23 adults with chronic tonal tinnitus listened daily to their own music, digitally filtered to remove energy at the frequency matching their tinnitus. After 12 months, the group receiving notched music showed significantly reduced tinnitus loudness and reduced auditory cortex activity at the tinnitus frequency, compared to a placebo group receiving differently-notched music. Neuroimaging confirmed changes in the relevant cortical region.
What it means for the app
The band-gap therapy removes acoustic energy at your tinnitus frequency, theorised to reduce maladaptive auditory cortex reorganisation through lateral inhibition — surrounding frequencies actively suppress the tinnitus-frequency region. This is a long-term therapy: the study ran for 12 months. It is suited to passive background listening.
The study
107 adults with subjective tinnitus listened to personalised sound — two narrow frequency bands positioned either side of their tinnitus pitch, boosted by 10dB within soft music — for at least two hours per day over three months, compared to 77 who listened to unmodified music. After three months, 93% of the personalised group reported tinnitus relief or disappearance, with significant improvements across all secondary measures including anxiety, sleep quality, and fear of tinnitus.
What it means for the app
The flanking band therapy generates two narrow bands calculated around your saved tinnitus frequency. The study found a clear dose-response relationship — participants who listened longer had better outcomes. The recommended protocol was at least two hours per day. Consistency matters more than any single session.
The study
53 adults with chronic tinnitus completed a blinded randomised crossover trial comparing six weeks of active sound therapy to six weeks of perceptually similar sham therapy. The active stimulus used a novel modulation designed to disrupt stable correlations between frequency pairs near the tinnitus frequency. Tinnitus loudness was significantly reduced after the active period (p = 0.012) but not the sham period, and the reduction persisted for at least three further weeks without listening.
What it means for the app
SMR Decorrelation works differently from the other therapies. Rather than removing or boosting specific frequencies, it disrupts the predictable relationships between frequency channels around the tinnitus frequency, aiming to reduce pathological neural synchrony. The trial was conducted entirely online with standard headphones and self-reported tinnitus matching — well-suited to an app-based format.
Tinnitus Toolkit is not a medical device and does not replace clinical care. All therapies are implemented independently from the published research. Individual outcomes vary and are not guaranteed. Results reported in studies reflect group averages under controlled conditions.